To write it as a matrix, find and . That will give you the two columns of the matrix.
This is easy! Think of it as where I is the identity matrix.2)Find an n x m matrix A such that Ax = 3x, for all x in R^n. Note: x is a vector, I just didn't know how to put a vector arrow above it.
To see the LaTex code I used for these, click on each formula.Thanks