Question 2. (4 points) For any of the following question, give an explicit example. If it is not possible write NOT POSSIBLE. You don't need to write any justification for this question. (a) [1 point] Give an example of an inconsistent linear system with more variables than equations. (b) [1 point] Give an example of four vectors in R4 whose span is NOT R4 and none of them is a multiple of another. (c) [1 point] Give an example of a linear transformation TA: R2 R3 that is 1-to-1. (d) [1 points] Give an example of two matrices A and B such that ABBA.