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phi Group TitleBest ResponseYou've already chosen the best response.0
this (almost) looks like u^1 du
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.0
This smells of parts, but I'm having trouble with \[\int\limits \frac{1}{x^2+1}dx\]
 one year ago

sirm3d Group TitleBest ResponseYou've already chosen the best response.0
that is arctangent
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.0
Although that might not help
 one year ago

sirm3d Group TitleBest ResponseYou've already chosen the best response.0
can you enlighten us with the problem?
 one year ago

klimenkov Group TitleBest ResponseYou've already chosen the best response.1
Do a substitution \(u=x^2, du=2xdx\)
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.0
\[0.5 \ln(u+1)\]
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.0
@sirm3d It's halfway through the DE of my last question
 one year ago

klimenkov Group TitleBest ResponseYou've already chosen the best response.1
Yes. Now make the inverse substitution.
 one year ago

sirm3d Group TitleBest ResponseYou've already chosen the best response.0
post a link @henpen
 one year ago

henpen Group TitleBest ResponseYou've already chosen the best response.0
http://openstudy.com/users/henpen#/updates/50968019e4b0d0275a3ce47b
 one year ago

sirm3d Group TitleBest ResponseYou've already chosen the best response.0
hmm, can we try reduction of order with \[y=v(ix)\]
 one year ago
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