Question

Is (-9, -2, 5)T in the span of (1,2,4)T and (3,1,2)T? support your answer (where T respresents the transpose of the vector)

Answer 1

So is there a scalar c, d such that c<1,2,4> + d<3,1,2> = <-9,-2,5>?

Answer 2

do i use reduced row echelon to find the solution?

Answer 3

Instead of just guessing values