Question 5. If z is an implicit function of x, y defined by key + yer + ze" = exyz use implicit differentiation to find a oz and oz ay' Question 6. For f(x, y, z) = In(y)ex- sin(3) + sin find fxyz. (Hint: Compute the derivative for each term separately. For each term, use the fact that the order of partial derivatives does not matter.)