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**fearless901** 1. Consider the part of the surface *f*(*x; y*) = *x^*2*y-xy^*3 + 8 over the

rectangle D = *{*(*x, y*) : 0 <=*x <=*2 ,* -*1 <=*y <=*2*}*.

(a) Plot the surface over D. Using a 30 by 30 grid.

(b) Construct a contour plot of that part of the surface with 30 con-

tours.

(c) Plot the surface together with its tangent plane at the point where

*x *= 0.8 and *y *= 0*.*5. Choose a vantage point from which you

can see that the plane is tangent to the surface (include the point

of Tangency as part of your plot).

2. (a) Use the integration commands in the symbolic tool-kit to find the

volume of the solid region between the *xy*-plane and the surface

drawn in Question 1.

(b) Use the numerical integration command dblquad to find the vol-

ume of the solid region between the *xy*-plane and the surface

drawn in Question 1.

i have no idea any can help me plz