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If f(x)=tan−1x1+√(1−x2)+sin{2tan−1√(1−x1+x)},x∈(0,1), then the value of f′(12) is

Answer» If f(x)=tan1x1+(1x2)+sin{2tan1(1x1+x)},x(0,1), then the value of f(12) is


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