CB : R3 - R' is a coordinate mapping CB (x) = [x] B Refer to definition 5.8.1 to answer the questions below Let B -1 2 . .[2] a) Determine if B is a basis of IR3 b) Given a vector * = CT - CO , find CB (). Find the matrix of this mapping c) Given x B = the coordinates of a vector with respect to basis B, find the vector x in RS. Find the matrix of this mapping