Question

( 10.7 y ln t sin ^{-1}left(frac{1-n^{2}}{1+n^{2}}right), ) then ( frac{d y}{d n} ) is
( frac{d y}{d x} cdot frac{2 x}{1+x^{2}}=frac{-2 xleft(1+x^{2}+1-x^{2}right)}{left(1+x^{2}right)^{x}} )
( frac{d y}{d x}=frac{-2}{1+x^{2}} )
oftion ( c ) is right answer.

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Solution