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If y = log(e^x/(e^x + 1)), then dy/dx equals - (A) 1/(e^x + 1)

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in Limit, continuity and differentiability by (54.9k points)

If y = log(ex/(ex + 1)), then dy/dx equals -

(A) 1/(ex + 1)

(B) 1/(ex + 1)2

(C) (ex - 1)/(ex + 1)

(D) None of these 

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Answer is (A) 1/(ex + 1)

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