= //pull out a '1' = //use integration by parts = = = Is pulling out a 1 in the first step a legitimate method when using integration by parts, or is it just a coincidence that it works? Thanks!
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Pull out a 1? There is a 1 in every equation since multiplying by 1 does nothing. Just doing integration by parts will work.
I think my understanding of integration by parts isn't too good. I'm not sure how to perform it without there being two functions to work with, which is why I pulled out the one. What's the proper way of dealing with this?
If we have an x, there is always an implied 1. There is a one in every function you can think since multiplying by a 1 does nothing to an equation.
So my method was right, but you don't think of it as pulling out a one? I just did that to help my head get around it.
Why pull out something that already exists?
Is this what you're doing? If it's, then it's valid, of course:
Yeah, that's what I'm doing. Thanks.
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