WITH SOLUTIONS PLEASE THANK YOU!

MULTIPLE CHOICES.

Question 6 Given: f (x, y, z) = cos(xyz) + Inx - sinhy' + 3z Find: of(c, y, 2) at P (-1, 3, 0) O0 O 1 O None of the choices 0 3 0 6Question 7 Given f(x, y, z) = zeay - x sin , what is far f(0,2,1)? O 2e2 - O none of the choices 01- 0 0 O 2- 13Question 8 Find the partial derivative of z with respect to x (" ) for z = (3x2 + 1) cos(zy). O Oz = -2ry (3x2 + 1) sin (x y) + 6xcos (@'y) O Or 0z _ _2x (3x' + 1) sin (@'y) + 6xcos (x y) O Oz _ _2xy' (3x2 + 1) sin(x y) - 6xcos (x]y) O None of the choices O Oz _ -2x (3x2 + 1) sin (x2) + 6xcos (x?)