Improper integral (e^(-x)-e^(-2x))/x. Feynman's trick.
This video will show you how to find the improper integral (e^(-x)-e^(-2x))/x using differentiation with respect to the parameter under the integral sign. This method was a favorite of theoretical physicist Richard Feynman.
This video shows five different ways to solve the integral 1/(1+x^2)^2, including the method of integrating with respect to the parameter under the integral sign: • Интеграл 1/(1+x^2)^2. 5 способов решения.