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If y = sin^(-1) x^2 sqrt(1 - x^2) + xsqr...

If `y = sin^(-1) x^2 sqrt(1 - x^2) + xsqrt(1 - x^4) `, show that `(dy)/(dx) - (2x)/(sqrt(1 - x^4)) = 1/(sqrt(1 - x^2))`

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