Suppose the matrix product AB is defined. a. If A is a 77 x 81 matrix and B is a column matrix, give the dimensions of B and AB.

Algebra and Trigonometry (6th Edition)
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ChapterP: Prerequisites: Fundamental Concepts Of Algebra
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Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Suppose the matrix product AB is defined.
a. If A is a 77 x 81 matrix and B is a column matrix, give the dimensions of B
and AB.
b.
Suppose 9A" + A is defined and AB is a 103 x 24 matrix. What is the size of
matrix A?
c. If A is a 62 x 43 matrix and (AB) is a 71 x 62 matrix, what size is matrix B?
Transcribed Image Text:Question Suppose the matrix product AB is defined. a. If A is a 77 x 81 matrix and B is a column matrix, give the dimensions of B and AB. b. Suppose 9A" + A is defined and AB is a 103 x 24 matrix. What is the size of matrix A? c. If A is a 62 x 43 matrix and (AB) is a 71 x 62 matrix, what size is matrix B?
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