Page ) of4 D ZOOM + 1 . A ock of birds is perched on a tree branch. The branch B can be modeled as a 3D line segment from point (0, 0, 3) to point (3, 4, 15); the units are ft. The \"linear ock density\" along the branch is given by the scalar function: birds Parametrize the branch B and evaluate : IE (,0 (is. What does this integral represent? 40(x.y.1) : x2 +yl Page 2 of 4 ZOOM + 2. For the scalar function 4(x, y, z) = x2 + yz , give formulas for each of the following and describe in words what they represent. (a) Vo (b) V . (VQ) (c) VX (VQ)