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" (v) "x^(2)cos^(-1)x...

" (v) "x^(2)cos^(-1)x

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Solve (sin^(-1)x)^(2)-(cos^(-1)x)^(2)

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cos^(-1){1/2x^(2)+sqrt(1+x^(2))sqrt(1-x^(2))/(4)}=cos^(-1)(x)/(2)-cos^(-1)x

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