How do you find a normal vector of a function at a point, such as f(x,y)= ax^y+yx^y^x+b at (X_o,Y_o)(adsbygoogle = window.adsbygoogle || []).push({});

where a and b are just arbitrary constants, and the function is an arbitrary function. So I guess, what is the general steps you take to find the normal? I thought it had to do with the gradient, but I'm still confused.

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# Find a normal vector to a graph

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