Find d y d x if x^2 y^2- ^ -1 (x^2+y^2 )= ^ -1 (x^2+y^2 ) - Vidyadip

Question

Find $\frac{d y}{d x}$ if

$x^2 y^2-\tan ^{-1}\left(\sqrt{x^2+y^2}\right)=\cot ^{-1}\left(\sqrt{x^2+y^2}\right)$

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