6. For each of the following matrices A, describe the associated matrix transformation TA geometrically. (Determine what it does to the standard basis vectors of R", and draw a picture. Then describe what it is doing in your own words in a sentence or two.) (a) A = (b) A = (c) A = 0 0 1 100 0 1 0 1 0 0 1 0 0 %) 10 00