1. The problem statement, all variables and given/known data let x=(i,1,1) and y=(1,i,2) find the magnitude of ix+y 3. The attempt at a solution i(i,1,1)+(1,i,2)=(0,2i,2+i) therefore mag sqrd = 0^2+(2i+2(-i))+(2+i)(2-i)=9 => magnitude = 3??? is this rite? i have completely forgotten when to take the conjugates... idk if im not meant to take the conjugate of 2i, but i have to for 2+i.... plz can anyone reassure me.