do b,c & d
Extracted text: For each of the following sets of vectors in R³, say whether the vectors span R³. Support your answers with reasons. (a) {(1,2, 3), (–1, 2, 3)} (с) {(2, —2, 1), (0, 2, — 2), (2, 0, —1)} (а) {(1,1,1), (1,-1, —1), (-1, 1, -1), (—1, -1, 1)} (b) {(1,2,3), (–1, 2, 3), (0,0,0)} 6.