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If f(x)=sin[tan−1(1−x22x)+cos−1(1−x21+x2)] ∀ x∈(0,1), then the value of f′(x) is

Answer» If f(x)=sin[tan−1(1−x22x)+cos−1(1−x21+x2)] ∀ x∈(0,1), then the value of f′(x) is


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