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y=cos^-1(8x^4-8x^2+1), prove that dy/dx=-4/(1-x^2)^1/2 y=cos^-1(8x^4-8x^2+1), prove that dy/dx=-4/(1-x^2)^1/2
which on little solving gives the answerArun KumarIIT DelhiAskiitians Faculty
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