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OpenStudy (anonymous):
arctan y/x d^2f/d^2y
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zepdrix (zepdrix):
You have it all jumbled up.. hard to read... \[\Large\rm f(x,y)=arcatan\left(\frac{y}{x}\right)\] And we're looking for \(\Large\rm \dfrac{d^2f}{dy^2}\), the second derivative of our function with respect to y? Or is it a partial derivative we're looking for?
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