Online calculators will show you a complex solution with complex numbers, I don't know why. Try it and if you REALLY want, I can post the solution here

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Mar 14, 2020

· Edited: Mar 14, 2020# An interesting and fun integral: ∫ln(cosx) dx from 0 to 1

An interesting and fun integral: ∫ln(cosx) dx from 0 to 1