1.(7pts) Convert 4 payya xdzaydx to cylindrical or spherical coordinates and evaluate.2.(7pts) Use the change of variables indicated to evaluate the double-integral (). 4(x + y)e* dA where R is the interior of the triangle whose vertices are (-1, 1), (0, O) and (1, 1); x = = (u + v) and y = = (u - v).3.(6pts) Evaluate the line integral J (x2 - y + 3z)ds where C is the line segment from (0, 0, 0) to (1, 2, 1)