Many of you must have seen numerous examples of such situations where we get an absurd result and have to spot flaw in proof.

A famous one is the “algebraic proof of 1=0”

Here I came across a “Calculus based proof of 1=0” inĀ *A Mathematical Mosaic* which I wanted to share with you.

It is based on “Integration by Parts” formula, which is:

So, the proof is of this form:

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