Question is attached

Q.1 a) Define Partial Derivative of f(x, y) with respect to y at point (Xo. Yo). ( (CLOD) b) Define Partial Derivative of f(x, y) with respect to x at point (Xo. yo) . (CLO 1) c) Identify the partial derivatives fr or (c/ox) and fx or (alay) as functions if (CLO 1) 2y f (x, y) = = y + cosx