Integral cos(x)/cosh(x) from 0 to infinity

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This video explains how to evaluate this advanced integral with a hyperbolic function, Integral of cos(x)/cosh(x) from 0 to infinity. In this process I used digamma function reflection formula and well known digamma integral.

Advanced Integral | Integrals | Improper Integrals | Integration | Advanced Calculus | Digamma function

#AdvancedCalculus #HyperbolicIntegral #Math
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You are doing a great service to all the math students n math lovers.. Appreciate 👏.. Keep up the noble work of disseminating knowledge 💡👌

sanjaysurya
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To derivate is mechanically easy, but to integrate, it's just art!!! ^_^

ianmii
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At first, I thought you were going to represent 1/(1+u) inside the integral as a Maclaurin series (since 0<|u|<1) and transform the integral to ∫ Σ ( then interchange to Σ ∫ and solve it). 😊

nasim
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Hello sir, helps me please, find int sin from x=-inf to inf

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