Evaluate int(0)^(pi)(e^(cosx))/(e^(cosx)...

Evaluate `int_(0)^(pi)(e^(cosx))/(e^(cosx)+e^(-cosx))dx`.

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To evaluate the integral \[ I = \int_{0}^{\pi} \frac{e^{\cos x}}{e^{\cos x} + e^{-\cos x}} \, dx, \] we can use a property of definite integrals. ...

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