A = +4-0 b = 2 127 Split b into p+q, with p in the column space and q perpendicular to that space. Which of the four subspaces contains q?

Find two 22 matrices such that |A|+|B|=|A+B|.

Let A be an nn matrix in which the entries of each row sum to zero. Find |A|.

Determine if the statement is true or false. If the statement is false, then correct it and make it true. For the product of two matrices to be defined, the number of rows of the first matrix must equal the number of columns of the second matrix.