This is for my homies taking Calculus.

U-substitution is the opposite of the Chain Rule. Integration by parts is the opposite of the **Product Rule**.

Don’t believe me?

Take **u** and **v** to be the left and right parts of some formula.

Now switch some symbols around and you’ve arrived at the formula for Integration by Parts.

By the way, I normally use **L** and **R** for the left and right groups of symbols when I’m teaching Product Rule. Here I just used **u** and **v** because that’s probably how you’ve seen the formula be written.

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Tags: calculus, chain rule, education, integration by parts, math, mathematics, maths, product rule, u-substitution

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