QuestionLet u=(1,1)u=(1,1) and v=(v1,v2)v=(v_1,v_2) be vectors in R2\mathbb{R}^2 with the usual inner product. Suppose ∥v∥=2\|v\|=2 and the angle between uu and vv is 45∘45^\circ. Find v1+v2v_1+v_2.
