Please answer in detail.

3-13 Although it seems silly, it is possible to do elementary row operations on n x 1 matrices. Every such operation defines a transformation of R" into R". For example, if we define a transformation of p3 into p3 by "add twice row 1 to row 3," this transformation transforms X1 0 X2 X2 *2 *3 + 2x] 2 Since this transformation is described by a matrix, we see that our elementary row operation defines a linear transformation. A transformation defined by a single elementary row operation is called an elementary transformation and the matrix that describes such a transformation is called an elementary matrix. Find matrices that describe the following elementary row operations on R" for the given value of n. a. Add twice row 3 to row 2 in 14. b. Multiply row 2 by 17 in R3. c. Interchange rows 1 and 2 in 14