Indefinite IntegrationHard

Question

dx =

Options

A.log (1 + e^x) − x − e^−x + c

B.log (1 + e^x) + x − e^−x + c

C.log (1 + e^x) − x + e^−x + c

D.log (1 + e^x) + x + e^−x + c

Solution

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