7) Let F(x,y) = (xy²+2y) + (x²y+2x+2)j be a vector field. a) Calculate curlF and divF, is F a conservative vector field? wwwww b) Find f such that Vf = F

Find an orthonormal basis for the subspace of Euclidean 3 space below. W={(x1,x2,x3):x1+x2+x3=0}

Let V be an two dimensional subspace of R4 spanned by (0,1,0,1) and (0,2,0,0). Write the vector u=(1,1,1,1) in the form u=v+w, where v is in V and w is orthogonal to every vector in V.