Given S= [a,b,c,d] belongs to R4, a not = 0. Find a basis that is a subset of s.
I am unsure what the a not = 0 means.
Would it just be a(1,0,0,0)+b(0,1,0,0)+c(0,0,1,0)+d(0,0,0,1) a not = 0.
If not, can someone give me an example of the basis.
Thanks in advance