(adsbygoogle = window.adsbygoogle || []).push({}); What is ∫ (dy)^2 ???

Fact:

Let a<b.

b

∫ (dy)^{2}= 0

a

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1) First of all, I'm having trouble understanding themeaningof the above integral. I tried searching my elementary calculus textbooks, but I really couldn't find ANY integral like this. I have only seen integrals like ∫ (dy) in my calculus books and so I have no idea how they can have (dy)^{2}which makes no sense to me...

2) Why is the above fact true? How can we rigorouslyproveit?

Hopefully someone can clarify this.

Thank you!

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# What is ∫ (dy)^2 ?

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