3 -x ² y ² 2 Given z=f(x,y) = e For (1,-2), estimate use f(0.9,-1.05), Show all work & YOU Calculator for approx. May a a.) determine the gradient for z 6.) write an equation for the tangent Plane, no simplifying required. C.) Approximate F(0.9, -1.05), Round to thousandth decimal Place.

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