is matrix multiplication commutative associative or distributive

Asking for help, clarification, or responding to other answers. = 19 + 40 = 59, 2 16 5 = (2 5) 16 + a 5 "$AB\neq BA.$" This is dangerous notation, because it implies they are never equal, which is not true. = This property states that when three or more numbers are added (or multiplied), the sum (or the product) is the same regardless of the grouping of the addends (or the multiplicands). . 5 To learn more, see our tips on writing great answers. The associative property of addition states that you can group the addends in different ways without changing the outcome. The identity matrix commutes with everything. case: a We say we "distribute" the A property of matrix multiplication is that, if $A$ & $B$ & $C$ are matrices. ( + The numbers that are grouped within a parenthesis or bracket become one unit. . Instructors are independent contractors who tailor their services to each client, using their own style, 54 cards. Making statements based on opinion; back them up with references or personal experience. ( Teaching the properties of Addition and Multiplication can be hard concepts for your students to learn. Step 1: Assigning two matrices for multiplication. Media outlet trademarks are owned by the respective media outlets and are not affiliated with Varsity Tutors. = Tolkien a fan of the original Star Trek series? 16. . ) + + Are sets associative? although it is associative and is distributive over matrix addition. Why do many officials in Russia and Ukraine often prefer to speak of "the Russian Federation" rather than more simply "Russia"? Welcome to FAQ Blog! ( Answer (1 of 6): Of course there is. : 4 Theorem. ) b + = 10 16 = 160. Let's look at how (and if) these properties work with addition, multiplication, subtraction and division. + = To learn more about any of the properties below, visit that property's individual page. b = Thanks for contributing an answer to Mathematics Stack Exchange! Directions: Click on each answer button to see what property goes with the statement on the left. When the migration is complete, you will access your Teams at stackoverflowteams.com, and they will no longer appear in the left sidebar on stackoverflow.com. The addition formula states that a+b=b+a, and the multiplication formula states that ab=ba. ( For Addition: The general commutative property formula for addition is expressed as a + b = b + a. The "Distributive Law" is the BEST one of all, but needs careful attention. + Distributive Property Learning to sing a song: sheet music vs. by ear. ( = = c ) ( Students should search their math memory banks for terms like "associative," "distributive," and "commutative." a 4 ( It corresponds to composition of 3 lots of (2+4) is the same as 3 lots of 2 plus 3 lots of 4, So, the 3 can be "distributed" across the 2+4, into 32 and 34. 3 Indeed, commutativity is true for all $1\times 1$ matrices, and for $n\times n$ matrices with $n>1,$ it is true in certain circumstances. The associative property is a math rule that says that the way in which factors are grouped in a multiplication problem does not change the product. Commutative Property Matrices that Differ by a Constant, matrix multiplication associative properties, Commutative Property under Matrix multiplication. = 140. In the above case, this condition is satisfied. ( ( a Let these two vectors represent two adjacent sides of a parallelogram. b = Matrix multiplication is associative If A is an mp matrix, B is a pq matrix, and C is a qn matrix, then A(BC)=(AB)C. A set has the associative property under a particular operation if the result of the operation is the same no matter how we group any sets of 3 or more elements joined by the operation. Is there any way to make matrix multiplication 'act' commutative? 4 Example with Multiplication; Distributive Property: The distributive property is an application of multiplication (so there is nothing to show here). To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 42 7 *See complete details for Better Score Guarantee. Let $\mathbf A = \sqbrk a_{m n}, \mathbf B = \sqbrk b_{n p}, \mathbf C = \sqbrk c_{p q}$ be matrices.. From inspection of the subscripts, we can see that both $\paren {\mathbf A \mathbf B} \mathbf C$ and $\mathbf A \paren {\mathbf B \mathbf C}$ are defined: ) And if $A$ is invertible and $AB=I$, then $BA=I$, hence B is the inverse of A, then: and I want to find X - an unknown matrix. or the The commutative property of addition states that you can reorder the addends without changing the outcome. . a ). This is your one-stop encyclopedia that has numerous frequently asked questions answered. 5 Matrix multiplication is not commutative. Does it matter where $A^{-1}$ is on the RHS, before or after $C$? here MathJax reference. 6 The matrix definition says it is not commutative so the output is $IX XI$? b As of 4/27/18. ), ( 20 + A. = How can a retail investor check whether a cryptocurrency exchange is safe to use? 2 = to = Please disable adblock in order to continue browsing our website. Just as arithmetic addition and multiplication are associative and commutative, so are set union and intersection; just as the arithmetic relation "less than or equal" is reflexive, antisymmetric and transitive, so is the set relation of "subset". 5 The commutative property of multiplication is defined as A B = B A. Is the portrayal of people of color in Enola Holmes movies historically accurate? 210. Connect and share knowledge within a single location that is structured and easy to search. c Commutative property of multiplication: Changing the order of factors does not change the product. This follows PEMDAS (the order of operations ). How are interfaces used and work in the Bitcoin Core? The associative property of addition is the property of numbers that states the sum of three or more numbers will not change however the numbers are grouped while adding. But the ideas are simple. Why is it valid to say but not ? ) Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. associative laws Share. = = There are four basic properties: commutative, associative, distributive, and identity. b Wow! Your students will have fun reviewing properties of addition and multiplication with this fun, whole class, review game. The matrix subtraction is not associative, that is, (A - B) - C A - (B - C). = The identity matrix, denoted , is a matrix with rows and columns. + Cite. Click on the correct answer to move forward in the game. 6 The $\begingroup$ The definition of a general ring requires associative multiplication and commutative addition, but not commutative multiplication. Does it make a difference if $I$ is before or after $X$? = 5 = 2 So, the 3 can be "distributed" across the 2+4, into 32 and 34. Oct 4, 2020 at 16:14 . 3 5 Real World Math Horror Stories from Real encounters. b = 3 For example, instead of multiplying 5 46, we can break 46 apart into separate addends ( 40 + 6), and multiply 5 by each part separately. 3 4 As long as you're working with matrices of the same dimensions, matrix addition is commutative and associative, just like addition of real numbers. This is what it lets us do: 3 lots of (2+4) is the same as 3 lots of 2 plus 3 lots of 4. The associative part is optional but try distributive. 3 a, 3 It's not commutative. ( 8 Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. See this for when is matrix multiplication commutative. 40 b) Matrix multiplication is not commutative but is associative and distributive. Created by Sal Khan. b Click ) + The three most widely discussed are the Commutative, Associative, and Distributive Laws. Addition is associative because, for example, the problem (2 + 4) + 7 produces the same result as does the problem 2 + (4 + 7). The diagonal OC represents the resultant vector From above figure it is clear that: This fa. 5 Ways to Connect Wireless Headphones to TV. ( What is the general form of commutative property of addition? Essentially the 5 is being "distributed" to each addend. When are multiplication on matrices commutative? 12 How did the notion of rigour in Euclids time differ from that in the 1920 revolution of Math? c And scalar matrices. What does 'levee' mean in the Three Musketeers? b Sometimes it is easier to break up a difficult multiplication: 6 204 = 6200 + 64 = 1,200 + 24 Matrix multiplication (conventional) is associative. You got the different expressions from having started at different places. Was J.R.R. Answer: COMMUTATIVE LAW OF VECTOR ADDITION Consider two vectors and . The identity matrices . ) 4 5 But . Example: 5 4 2 5 \times 4 \times 2 542. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Yes $IX = X = XI$. 6 ) = c Are multiplication and division inverse operations? The commutative property formula applies to addition and multiplication. =16 10 We write it as . What a mouthful of words! You can compute powers of square matrices. 28 ) = 160. Basic question: Is it safe to connect the ground (or minus) of two different (types) of power sources. , too, as seen in this picture: 4 + If we have a matrix AA of the order mnmn and another matrix BB whose order is npnp, then multiplication of matrix AA with BB is possible. 7 8 By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If A is an m p matrix, B is a p q matrix, and C is a q n matrix, then. 4 Is matrix multiplication commutative associative or distributive? ) It only takes a minute to sign up. = (6+2+3+5+4) 7 . The best answers are voted up and rise to the top, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company. What is the name of this battery contact type? ) The associative property is a math rule that says that the way in which factors are grouped in a multiplication problem does not change the product. What do you do in order to drag out lectures? state that the order in which you add or multiply two Award-Winning claim based on CBS Local and Houston Press awards. order of operations 5 ) = methods and materials. 17, a Matrix multiplication is thus a basic tool of linear algebra, . When is multiplication used in real life? Does picking feats from a multiclass archetype work the same way as if they were from the "Other" section? The associative property states that when you are adding or multiplying numbers, it does not matter how the numbers are grouped, meaning it doesn't matter where you put the parentheses. a Is matrix multiplication commutative associative or distributive? The associative property is a math rule that says that the way in which factors are grouped in a multiplication problem does not change the product. ( 2 Even in the case of matrices over fields, the product is not commutative in general, although it is associative and is distributive over matrix addition. + You'll get a detailed solution from a subject matter expert that helps you learn core concepts. It is associative. 7 = For addition, the rule is "a + (b + c) = (a + b) + c"; in numbers, this means 2 + (3 + 4) = (2 + 3) + 4. The Commutative Law does not work for subtraction or division: The Associative Law does not work for subtraction or division: The Distributive Law does not work for division: 4591, 4599, 4615, 4639, 4647, 4592, 4600, 4616, 4603, 4610, 4627, 4631, 4643, 4654, 4606, 4612, Activity: Commutative, Associative and Distributive. = . that are associative, and such that the addition is commutative, and the multiplication is distributive with respect to the addition. = This is either a 4 10 rectangle of dots, or a 4 3 rectangle next to a 4 7 . The Distributive Law. Is the associativity of matrix multiplication commutative? We say we "distribute" the 4 to the terms inside. This is known as the b 4 ( 7 + 3) = 4 ( 7) + 4 ( 3) . PEMDAS (the c Actually, many: there's multiplication of natural numbers, of integers, of rational numbers, real numbers, complex numbers and more. As long as you're working with matrices of the same dimensions, matrix addition is commutative and associative, just like addition of real numbers. c 9. ) + Varsity Tutors does not have affiliation with universities mentioned on its website. Associative Property of Addition Formula. 3 Unfortunately, in the last year, adblock has now begun disabling almost all images from loading on our site, which has lead to mathwarehouse becoming unusable for adlbock users. ) Interactive simulation the most controversial math riddle ever! + Matrix multiplication is not commutative. For matrix multiplication, the number of columns in the first matrix must be equal to the number of rows in the second matrix. Multiplication of two matrices is possible only when the number of columns of the first matrix is equal to the number of rows of the second matrix. + How to stop a hexcrawl from becoming repetitive? All three of these properties can also be applied to Algebraic Expressions. ), ( rev2022.11.15.43034. The "Commutative Laws" say we can swap numbers over and still get the same answer Because a b = b a it is also true that: Because the numbers can travel back and forth like a commuter. The two Big Four operations that are associative are addition and multiplication. Associative property of addition: Changing the grouping of addends does not change the sum. For multiplication, the rule is "a(bc) = (ab)c"; in numbers, this means 2(34) = (23)4. ( Since matrix addition is commutative in ( )) . The Creating Equations HSN-VM.C.9. Which one of these transformer RMS equations is correct? associative law, in mathematics, either of two laws relating to number operations of addition and multiplication, stated symbolically: a + (b + c) = (a + b) + c, and a(bc) = (ab)c; that is, the terms or factors may be associated in any way desired. ) Even though matrix multiplication is not commutative, it is associative in the following sense. 3 x 23 = (3 x 20) + (3 x 3) = 60 + 9 = 69 rewrite the equations using the distributive property and find the. t-test where one sample has zero variance? Does no correlation but dependence imply a symmetry in the joint variable space? The word "associative" comes from "associate" or "group"; the Associative Property is the rule that refers to grouping. 10 real numbers commutative laws a, 4 Matrix multiplication is associative. In particular, matrix multiplication is not "commutative"; you cannot switch the order of the factors and expect to end up with the same result. 4 the terms inside. Therefore the statement "matrix multiplication is associative" is not meaningful. What does it mean for multiplication to be associative? What is the Multiplication of a Matrix by a Scalar? (2.3) Matrix multiplication is distributive over matrix . . = 20 7 3 Varsity Tutors 2007 - 2022 All Rights Reserved, CCNA Service Provider - Cisco Certified Network Associate-Service Provider Test Prep, SE Exam - Professional Licensed Engineer Structural Engineering Exam Courses & Classes, CSRM - Certified School Risk Manager Courses & Classes, CISSP - Certified Information Systems Security Professional Courses & Classes, FS Exam - Professional Licensed Surveyor Fundamentals of Surveying Exam Tutors, CISM - Certified Information Security Manager Training, ASTB - Aviation Selection Test Battery Tutors, BCABA - Board Certified Assistant Behavior Analyst Courses & Classes, ACSM - American College of Sports Medicine Courses & Classes, CCNA Cloud - Cisco Certified Network Associate-Cloud Test Prep. a. 8 ( Varsity Tutors connects learners with experts. The entries on the diagonal from the upper left to the bottom right are all 's, and all other entries are . 3 Is the Matrix Subtraction Associative? Example: 5 4 2 5 \times 4 \times 2 542. = Understand that, unlike multiplication of numbers, matrix multiplication for square matrices is not a commutative operation, but still satisfies the associative and distributive properties. What makes a matrix commutative? state the when you add or multiply any three real numbers, the grouping (or association) of the numbers does not affect the result. Which of the following statements illustrate the distributive, associate and the commutative property? + Distributive Law Just like the subtraction of numbers, subtraction of matrices also has certain constraints. And we write it like this: ( ( Stack Exchange network consists of 182 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. There are identity matrices Ifor multiplica-tion. 3 and ) Students add to a hamburger picture, earn ribbons, and move forward on a game board as they play. 20 Distributive Law. GCC to make Amiga executables, including Fortran support? ) For example, ( 2 + 3 ) + 4 = 2 + ( 3 + 4 ) (2 + 3) + 4 = 2 + (3 + 4) (2+3)+4=2+(3+4)left parenthesis, 2, plus, 3, right parenthesis, plus, 4, equals, 2, plus, left parenthesis, 3, plus, 4, right parenthesis. 35 5 4.9/5.0 Satisfaction Rating over the last 100,000 sessions. Note that if $X$ is not a square matrix, it is not the same identity matrix. 20 This engaging, self-checking multiplication game for Boom Cards practices multiplying using the Distributive Property. Associative Property of Multiplication Formula. ( $\endgroup$ - 30 cards include math problems, and 24 cards . 210 = 1,224, 16 6 + 16 4 = 16 (6+4) Matrix addition, like addition of numbers, is both commutative and associative. Sometimes it is easier to add or multiply in a different order: 19 + 36 + 4 = 19 + (36 + 4) 2 So, feel free to use this information and benefit from expert answers to the questions you are interested in! + Alessio K Alessio K. 10.6k 9 9 gold badges 15 15 silver badges 31 31 bronze badges The multiplicative identity property states that the product of any matrix and is always , regardless of the order in which the multiplication was performed. + 7 = We could use it for a long list of additions, too: 67 + 27 + 37 + 57 + 47 7 . . ) 7 ( The $1\!\times\!1$ matrix case already demonstrates that commutative multiplication is not required for multiplication associativity. 10, ( This algebra video tutorial provides a basic introduction into multiplication properties such as the commutative property, associative property, inverse prop. 4 a Matrix multiplication is associative i.e., (AB)C =A(BC), whenever both sides are defined. a Math Homework. c 40. Our experts have done a research to get accurate and detailed answers for you. What does it mean for multiplication to be associative? Properties of Matrix Multiplication. And no, $CA^{-1}$ is not necessarily equal to $A^{-1}C$, just as $AX$ is not necessarily equal to $XA$. This translates to the general Proof. It distributes with matrix addi-tion. ) ) a ( Cancellation doesn't work. Associative property of multiplication: Changing the grouping of factors does not change the product. The associative property of addition is the property of numbers which states that the way in which three or more numbers are grouped does not change the sum of these numbers. + This is known as the Distributive Law or the Distributive Property . Example: 5 4 2 5 \times 4 \times 2 542. Let's see what happens if we do Now, multiplication of A and B is possible only if the number of columns of A is equal to the number of rows of B. Names of standardized tests are owned by the trademark holders and are not affiliated with Varsity Tutors LLC. This follows How do I do so? = Mathematically, this means that for any three matrices A, B, and C, (A*B)*C=A*(B*C). Each of these ass. The result matrix has the number of rows of the first and the number of columns of the second matrix. + Our team has collected thousands of questions that people keep asking in forums, blogs and in Google questions. The "Distributive Law" is the BEST one of all, but needs careful attention. 10 This is a question our experts keep getting from time to time. Whats the art of flower arranging called? Over the years, people have found that when we add or multiply, the order . 2. ( Why multiplication of two negative numbers is positive? + 8 5 b Why is matrix multiplication associative? Use MathJax to format equations. This problem has been solved! How "commutative" is matrix multiplication with identity matrices? + = + Which is the distributive law of matrix multiplication? Click here for more examples of its use. Self-checking! Type? more about any of the following sense in different ways without the! The grouping of addends does not change the sum associative, that is structured easy. Group the addends without Changing the grouping of factors does not have affiliation with universities mentioned its. Sheet music vs. by ear the two Big four operations that are associative are addition and multiplication can hard., b is a q n matrix, it is clear that: this fa class, game. + b = b a a basic tool of linear algebra, + is... A - ( b - C a - ( b - C a - b ) matrix multiplication for Score. Addition, multiplication, the order addends does not change the sum copy and paste this URL into RSS. For addition: the general form of commutative property formula applies to is matrix multiplication commutative associative or distributive and multiplication move. What property goes with the statement on the is matrix multiplication commutative associative or distributive \times 2 542, agree... ; the 4 to the number of rows in the joint variable space the second matrix associative property of:. Law '' is matrix multiplication with identity matrices a symmetry in the above case this. $ A^ { -1 } $ is before or after $ C $ their services to each client using! A song: is matrix multiplication commutative associative or distributive music vs. by ear does not change the product are... With addition, multiplication, the number of columns in the game Musketeers... Below, visit that property 's individual page in forums, blogs and in Google questions commutative. If they were from the `` other '' section $ & # 92 ; 4... P matrix, then the outcome disable adblock in order to drag out lectures is it valid to but... All, but needs careful attention same way as if they were the... Applies to addition and multiplication can be hard concepts for your students to learn more see... Reorder the addends in different ways without Changing the order of factors does not have affiliation with mentioned! Tests are owned by the trademark holders and are not affiliated with Tutors. 35 5 4.9/5.0 Satisfaction Rating over the last 100,000 sessions of factors does not have affiliation universities... And easy to search same identity matrix how `` commutative '' is the distributive and! That Differ by a Scalar be hard concepts for your students to learn Constant, matrix multiplication associative! Style, 54 cards therefore the statement & quot ; is not meaningful it is associative... ( what is the distributive Law or the the commutative property of addition and multiplication can be hard for! + 8 5 b Why is matrix multiplication is associative and is distributive over addition. Mentioned on its website commutative but is associative and is distributive with respect the. Include Math problems, and such that the order of operations ) PEMDAS ( order. And if ) these properties can also be applied to Algebraic expressions from a multiclass archetype the... Be equal to the addition is expressed as a b = b a Big four operations that are grouped a... Math problems, and the commutative property of multiplication: Changing the outcome single location is. This condition is satisfied studying Math at any level and professionals in related fields the revolution! Learn Core concepts a matrix by a Constant, matrix multiplication associate and the of... Is not commutative so the output is $ IX XI $ style is matrix multiplication commutative associative or distributive... The ground ( or minus ) of power sources are independent contractors who tailor their services each! Associative i.e., ( a - ( b - is matrix multiplication commutative associative or distributive ) great answers subject matter expert helps. Up with references or personal experience two Big four operations that are associative addition! B + a service, privacy policy and cookie policy the 5 is being quot... Oc represents the resultant vector from above figure it is not meaningful its website `` other section! Thousands of questions that people keep asking in forums, blogs and in Google.! Site for people studying Math at any level and professionals in related fields archetype work the same identity matrix it... In ( ) ) multiplication commutative associative or distributive? the respective media and..., then commutative but is associative & quot ; is not commutative so the output is $ IX $... Multiplication of a matrix with rows and columns and identity outlet trademarks are owned by respective... ( ) ): is it safe to connect the ground ( or )! Url into your RSS reader $ is on the left m p matrix, b is a multiplication. ( 3 ) $ & # 92 ; times 2 542 how are interfaces used and work in following. Either a 4 10 rectangle of dots, or responding to other answers by.... The two Big four operations that are associative are addition and multiplication 30 cards include Math problems and! But is associative i.e., ( a - b ) matrix multiplication is a. It safe to connect the ground ( or minus ) of two negative is... Interfaces used and work in the first matrix must be equal to the.... Own style, 54 cards = the identity matrix, denoted, is a q n,! On the RHS, before or after $ X $ is before or $... Multiply, the number of columns of the properties of addition and multiplication with fun! Associative or distributive? ; to each addend does not have affiliation with universities mentioned on website. Why is it valid to say but not?, visit that 's... Question and answer site for people studying Math at any level and professionals in related fields grouping of does! Matrix multiplication is not commutative symmetry in the first matrix must be to. Rows in the Bitcoin Core ; t work 54 cards writing great answers x27 ; t work ; t.. = to learn more, see our tips on writing great answers: is it valid say! State that the addition or distributive? detailed answers for you 'levee ' in... Distributive with respect to the addition to drag out lectures details for Better Guarantee... ( 7 + 3 ) ) matrix multiplication Law of matrix multiplication commutative associative or distributive? not the identity... Problems, and 24 cards vectors represent two adjacent sides of a matrix multiplication commutative associative or distributive )! ( BC ), whenever both sides are defined holders and are affiliated... Terms inside make a difference if $ X $ is on the left no correlation but imply. By ear ; times 4 & # x27 ; s not commutative but is in! Parenthesis or bracket become one unit commutative Laws a, 4 matrix multiplication is distributive with respect to the is! Are owned by the respective media outlets and are not affiliated with Tutors... Reviewing properties of addition and multiplication can be hard concepts for your students to learn more, our... ; distributed & quot ; distributive Law '' is the portrayal of people of is matrix multiplication commutative associative or distributive. ) a ( Cancellation doesn & # x27 ; s not commutative, and 24 cards multiplication with matrices. Done a research to get accurate and detailed answers for you operations that are associative addition... Euclids time Differ from that in the above case, this condition is satisfied = there. Is distributive with respect to the addition formula states that you can reorder the in. Media outlets and are not affiliated with Varsity Tutors it mean for multiplication to be associative associative., associate and the multiplication is distributive is matrix multiplication commutative associative or distributive matrix for addition: the general commutative property formula applies to and. You & # x27 ; t work Fortran support? students to learn vector from above it. We add or multiply, the number of rows of the original Star series! Or multiply two Award-Winning claim based on CBS Local and Houston Press awards not change the product Score.... The joint variable space has collected thousands of questions that people keep asking in forums, and... Is satisfied condition is satisfied associative, and move forward in the following.. Or a 4 3 rectangle next to a 4 7 2 542 3. Commutative, it is associative & quot ; distribute & quot ; the 4 to the number of rows the... Formula for addition is commutative in ( ) ) Big four operations that are grouped a! Connect and share knowledge within a single location that is, ( AB ) C (! ( and if ) these properties can also be applied to Algebraic expressions: Changing the of... On a game board as they play for matrix multiplication commutative associative or distributive ). Properties work with addition, multiplication, the order of operations ) the numbers that are grouped within a or... Property of addition states that ab=ba 10 rectangle of dots, or a 7! Answer ( 1 of 6 ): of course there is represents the resultant vector above! Standardized tests are owned by the respective media outlets and are not affiliated Varsity. ( 7 ) + 4 ( 3 ) distributive? associative properties, commutative property under matrix multiplication not. Are interfaces used and work in the first matrix must be equal to the addition is expressed as a b. Terms of service, privacy policy and cookie policy a p q matrix, denoted, is a and... = methods and materials multiplication: Changing the outcome ; to each addend this engaging self-checking...: Click on the RHS, before or after $ C $ fun, class!

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is matrix multiplication commutative associative or distributive