1. (1 Point) Which of the following are valid triple integrals? ("Valid" here means that the bounds of the iterated integral describe a real volume in R3). e"yz dady dx O Valid O Invalid exyz daddy O Valid ( Invalid O Valid O Invalid ery= daddy O Valid ( Invalid 2. (1 Point) Consider the iterated triple integral f(x, y, z ) dz dy da Sketch the projection of the region W into the ry-plane, and the projection of W into the rz-plane. Figure 1: Projection into ry-plane Figure 2: Projection into cz-plane