What is the product of the following two matrices?
The other choices are irrelevant to my question. . Really?
In my book, the answer is A, while I believe it is B
. . because if c1 = r2 , then a product exists.
However, this is not upheld in this given question because c1 = 1, and r2= 4.
Not true . . . The first matrix has four columns: c1 = 4.
We are multiplying a matrix by a matrix.
The product is a matrix . . . That's one row and two columns: .
The book's answer is wrong; it is a matrix . . . the wrong shape!