Тупиковое решение интеграла приводит к неожиданному результату

In this video, we'll find an integral with a "square sine wave" and see how a seemingly dead-end solution can sometimes lead to an unexpected result: the fractional decomposition of the hyperbolic tangent. This video shows the integral e^x*sinx:    • Возвратный интеграл sin(x)*exp(x)   This video shows the fractional decomposition of the cotangent using Fourier series:    • Ряд Фурье для cos(at) ведет к разложению к...   This video shows a similar decomposition using a contour integral for the FCP:    • Очень комплексный подход к сумме ряда   If you can, please support the channel: Sberbank: 4276160020048840 Tbank: 5536914075973911 Regular support: https://boosty.to/hmath