Use the following matrices to determine the dimensions of CD. A = [2 -1 4] A. 1x 2 B. 2x1 C. Cannot be determined OA B U 3 B = 5 0 c = [267] C D= [32]

If A, B, and C are 5 x 5, 5 x 3, and 3 x 9 matrices respectively, determine which of the following products are defined. For those defined, enter the dimension of the resulting matrix (e.g. "3x4", with no spaces between numbers and "x"). For those undefined, enter "undefined". AC: AB: BC: A². UU

I believe A is correct, but I am not sure about w. It needs to be written as a fraction. Thanks!

Q.5 Write each product as a single matrix: 1 02 1 1 [3 -2 2] 2 i. ii. iii. iv. 3 1 -1 2 -1 -2 57 -2 -1 -1 3 2 -2 -1 1 0 -1-1 -2 4 -2 52 -2 L 1 -1 -1 -1 3 1 1 -2 -1 -2 4 1 0 -1