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integrating by parts a level question

I’m doing this question and I’ve identified dv but I’m not sure how to integrate it to find v

https://share.icloud.com/photos/085FJ4fgbXFb-v9Wx6vVG9_nw
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Original post by esha06
I’m doing this question and I’ve identified dv but I’m not sure how to integrate it to find v

https://share.icloud.com/photos/085FJ4fgbXFb-v9Wx6vVG9_nw

Its just the (reverse) chain rule. More generally you have
dv = 2 f'(x) f(x)
so integrating gives ...
(edited 4 months ago)

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