\f\f16. In each part, find a 6 x 6 matrix day | that satisfies the stated condition. Make your answers as general as possible by using letters rather than specific numbers for the notzero entries (b) a, 0 fry (d) =0 f |1-j|21 In Exercises 27-28, how many 3x 3 matrices A can you find for which the equation is satisfied for all choices of x, J, and = ?In Exercises 3-4, suppose that the augmented matrix for a linear system has been reduced by row operations to the given row echelon form. Solve the system 3. (a) 1 - 3 7 1 2 0 1 5 ANSWER O WORKED SOLUTION O (b) 5 6 0 1 4 9 1 2 ANSWER G WORKED SOLUTION (c) 1 ANSWER WORKED SOLUTION\f