Reddit Feynman Integral. We calculate the integral from 0 to 1 of x^2 - 1 / lnx using two methods: the Feynman technique and classical u substitution. Both methods are useful in physics and a must learn for beginning calculus students and anyone interested in integrals and integration.

0:00 Feynman way
3:49 u sub way

Feynman integration:    • But I AM joking, Mr. Feynman!  

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