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Learning Feynman's Trick for Integrals

Learning Feynman's Trick for Integrals

1 comments

·November 29, 2025
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impossiblefork

It starts off with a pretty major error.

I'(t)=\int_0^1 \partial/(\partial t)((x^t - 1)/(ln x))dx = \int_0^1 x^t dx=1/(t+1), when it is actually equal to \int_0^1 x^{t-1}/ln(x)dx.

These two are definitely not always equal to each other.