I'm from Vietnam,I can't do it, help me !
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Originally Posted by butbi9x
I'm from Vietnam,I can't do it, help me ! Hi
1. You can integrate by parts
2. Twice by parts
3. By parts with and v(r)=rē
One way to do the third one is to sub
And just to add on running-gag's advice for number 2, you can treat the integral as the unknown and solve for it.
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