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If y=tan^(-1)((2^x)/(1+2^(2x+1))),t h e ...

If `y=tan^(-1)((2^x)/(1+2^(2x+1))),t h e n(dy)/(dx)a tx=0` is (a)1 (b) 2 (c) 1n 2 (d) none of these

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