Please Explain

a)

If B = (a, b, c) is the ordered basis of R" consisting of the vectors a = (23, 12, 20), b = (12, -12, -38), c = (-216, 1114, -420) then the matrix converting from B-coordinates to standard coordinates is CS+ B =You are given the information that B = (a, b, c) is an ordered basis of R", where . a = (-48, -11, -7) . b = (13, -7, -2) . c = (-3,3, 1) Find the matrix which converts from B-coordinates to standard coordinates. CSUB = Then find the matrix which converts from standard coordinates to B-coordinates = If xB = (12, 6, -28), then what are the standard coordinates for x? If xs = (8,3, -8), then what are the B-coordinates for x? KB =