Recent content by spring_rolls

I have a few questions here, my main problem is not understanding the notations used, hence not understanding the questions. Homework Statement 1. Do the vectors j_{1}= (1,0,-1,2) and j_{2}= (0,1,1,2) form a basis for the space W = {(a,b,c,d) l a - b + c = 0, -2a - 2b + d =0} ? 2...