Perusing through old pics, and I found this.

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You are currently reading a thread in /sci/ - Science & Math

You are currently reading a thread in /sci/ - Science & Math

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Perusing through old pics, and I found this.

I have not been in a Calculus class in five years, and I've forgotten damn near everything I know.

I know it has something to do with integrals; can someone give me the short-and-sweet version of what the hell this is?

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>>7643530

Partial integration senpaitachi

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>>7643530

Integration by parts, it's a formula for (most of the time) solving integrals which are products, like x(e^x)

http://tutorial.math.lamar.edu/Classes/CalcII/IntegrationByParts.aspx

Very useful thing to remember desu

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More sauce for learning: http://www.math.wisc.edu/~park/Fall2011/integration/Integration%20by%20parts.pdf

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>>7643545

woah nelly, you've really forgotten everything

(yes).

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>>7643545

Yes. See https://en.wikipedia.org/wiki/Notation_for_differentiation

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You idiots OPs equation is nothing but bullshit!

You cannot perform integration by parts on an indefinite integral.

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>>7643568

You stupidity is indefinite, friendo

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>>7643577

Look it up. The first term on the right side of the equation has to be evaluated at some boundaries, otherwise this could lead to serious logical problems.

inb4, but in physics I do it all the time (you evaluate at infinity, collegueo)

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>>7643553

Nice article thanks

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>>7643593

What the hell are you talking about? If you want to find the antiderivative of fg' you note that it is equal to (fg)'-f'g if f is differentiable, then since anti-differentiation is linear from anti-differentiable functions to the equivalence classes of functions modulo constants you get integration by parts for indefinite integrals.

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>>7643530

Integration by parts.

Integeral of v du = uv - integral of v du

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>>7643718

https://drive.google.com/file/d/0B-fv2by5dhmUSS1wVk1VRG1OWnc/view?usp=sharing

btfo autists

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