Evaluate: int0^pi(e^(cosx))/(e^(cosx)+e^...

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 simplify the integrand. Notice that ...

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