No Calculus Needed! (kinda) @DrWeselcouch

Uploaded February 2021 | Updated September 2026, 7 hours ago

In this video we evaluate the integral from 0 to pi/4 of ln(1+tan(x)) dx. We use trig and log identities so solve the integral.

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$For the Fibonacci Fans! We give a combinatorial proof of a Fibonacci Identity. We show that f_{n+p} = sum_{I=0}^p binom{p}{I} f_{n-i}. Make sure to subscribe for more Combinatorics problems! https://www.youtube.com/c/DrWeselcouch$

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