questions below:

Use row-reduction to compute the inverse of the matrix below, if it exists, and confirm your answer by comparison with the formula a b d - b c d ad - bc if ad - bc # 0. -C a N 1 6 5 Set up the correct augmented matrix needed in order to find the inverse by row-reduction. 6 5 (Type integers or simplified fractions.) Find the inverse of the given matrix, if it exists. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. (Type an integer or simplified fraction for each matrix element.) O B. The inverse does not exist.Express the system of differential equations in matrix notation. x1 : 3x1 3x2 +Ir')(3 5x4 x2 = 5x1 + 3x4 4' x3 = x14x3 x4 = u Write the system of equations using matrix notation. Select the correct choice below and ll in the answer box to complete your choice. (Type an exact. answer.) _ _ _ , "3 x1 3'3 x1 0 A. . =D . x4 x2 3'4 X2 "1 X1 . X2 *2 O B. ' = *3 X3 . X4 x4 _ K I _ _ X i 1 3 3'1 X3 0 C' u r x2 x4 X2 X4