Lil' ol' mathematician me

• 27.04.2021 14:15 UTC+02:00
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Over at MindYourDecisions, Presh Talwalkar presents a legendary test question, in which a fabulously complicated integral is solved using polynomial division—I didn't even know that was a thing—with the ultimate challenge of proving:

You can achieve this much quicker by firing up your trusty calculator and typing the following:

The answer is 0.00126448926735, which is greater than zero and means that π is indeed less than 22/7.

If only all problems were this simple!