.) Given a function f(x, y) = x2 + yz, a point P(a,b), and a constant k = fCa, b), where a = 1 ant b = 1. a) Find the vector u = b) Find the direction vector v for the tangent line at P on the level curve f(x, y) = k c) Sketch the following on the same graph i) The level curve f(x,y) = k ii) The vectors u and 17 both starting at the point P d) Compute u - 17. What can you conclude about the vectors u and v