The sizes of two matrices A and B are given. Find the sizes of the product AB and the product BA, whenever these products exist. A is 2x4, and B is 4x 4. Find the size of the product AB. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. The size of product AB is O B. The product AB does not exist.

Q: 9. 1 3 X - 2 1 5 3 1 32 -1

A:

Q: -4

A:

Q: Find the product of the following two matrices. 3 -3 4 2 1

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Q: If A and B are nxn matrices .Find the cost of calculating A? + BAB.

A: Given A and B are n×n matrices.  To find the cost of A2 + BAB

Q: For the matrices A and B, find (a) 3A, (b) −B, and (c) 3A − B.

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Q: Solve using matrices.   5x−y−6z=2 9x+y− z=5 9x+y−5z= 7

A: Here we will solve given system of equations,

Q: Let A and B be the following matrices. Perform the following operations: -8A = A - 2B = 5A - 2B = -2…

A: