Ok, this is probably easy...but i'm stuck(adsbygoogle = window.adsbygoogle || []).push({});

f(x,y) = y^2 + xy - x^2 +2

find the gradient of the normal to the level curve at the point (3,-2)

my answer is -1/root65 , but it's supposed to be 1/8.

I did it by finding Fx(x,y) = y-2x and Fy(x,y) = 2y+x then finding the absolute value of the gradient..

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# Homework Help: Tangent planes

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