Answer ALL questions: Question 1 Find the gradient vector Vf at the point P if: f(x,y,z) = (2x-3y + 5z)5; P(-5,1,3). Question 2 Find the directional derivative of f at the point P in the direction if f(x, y, z)=10-x-y-22; P(1,1,-2); v = (3,4,-12) [That is, finding Duf (P) where u = Bell