Question 11 Verify that the given vector field h is a gradient. Then calculate the line integral of h over the indicated curve C by finding f such that Vf= h and evaluating f at the endpoints of C. h(x, y) =zy2i+yz² j 256 384 -128 -32 128 None of these. r(u) = 2ui+u² j u = [0,2]