The integral of sin(x)/x from 0 to inf by using Feynman's technique (aka differentiation under the integral sign). This integral is also called the Dirichlet integral. Check out another example of Feynman's technique of integration: https://youtu.be/YO38MCdj-GM
Zachary's page: https://philosophicalmath.wordpress.com/ ,
integral of sin(x)*e^(-bx), https://www.youtube.com/watch?v=6t-Fro29BNA
Another example, Integral of ln(x^2+1)/(x+1) from 0 to 1 by Mu Prime Math, https://youtu.be/Y6ZQMgk3A8s
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