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anonymous
 one year ago
Would I have to use the 'u' substitution method to solve this integral?
anonymous
 one year ago
Would I have to use the 'u' substitution method to solve this integral?

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nincompoop
 one year ago
Best ResponseYou've already chosen the best response.0can you try without usub?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@nincompoop lol no clue

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4You can pull the 9 out as it's just a constant

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ohh right! I always forget that! >.<

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4\[9 \int\limits \frac{ \left( lnx \right)^2 }{ x } dx\] u = lnx

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4\[du = \frac{ 1 }{ x }dx \implies dx= xdu\]

Empty
 one year ago
Best ResponseYou've already chosen the best response.0Yeah you're both right :P

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ohh ahah right! I've lost my mind xD

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4This anonymous user who keeps joining makes me lose connection

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0kk so then.... \[9\int\limits \frac{u^2}{x}(\frac{1}{x})du = 9\int\limits \frac{ u^2 }{ x^2 }du\] right?

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4Oh it shows up for me then I refresh haha...but when you do a u sub, you should not have any x's in your integrand

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4Well, unless you're just subbing in for du, then the x's should get cancelled out

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4\[9 \int\limits \frac{ u^2 }{ x }xdu\] right/

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Wait what just happened? o.o

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4dw:1437192143650:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Right, followed till here

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4dw:1437192220267:dw sorry I forgot it was squared, so you can just edit that, but this is the method, it should make more sense since I wrote it out as well haha.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ohhhh OK didn't notice that! Yep, makes sense!

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4BTW don't forget the +C

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0True true true!!! XD Haha was about to forget! Lol thanks so much you math genius! :D

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4http://www.wolframalpha.com/input/?i=integrate+%289%28lnx%29%5E2%29%2Fx+dx is what you should get even though you don't need wolfram for this xD

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0SO final answer would be \[9(\frac{ (lnx)^3 }{ 3 })\] ... i think :P haha

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hahaha oh gee m bad XD yes +C

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4\[\huge \checkmark\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Niiiiiiice how'd you do that?? :O

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Heyyyyy it aint working :P LOL

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4No no, I meant for latex, so you can put it in the equation bar

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yours was bigger .

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4Yay, you can also right click on peoples latex and go on "show math as" and it will show what they used, so I also put \huge checkmark

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4the \huge makes it bigger :P

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can we also put in \super huge checkmark ?? XP would that work?? XD

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4Haha no, but you can experiment with it, large, tiny xD

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4\[\tiny \text{astrophysics}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hahaha thats awesome!! \[\Large BOO! \] scare ya? :P

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4dw:1437193445973:dw ahhhh

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Arighty better close this question before the mathematicians here get pissed at me xD lol

Astrophysics
 one year ago
Best ResponseYou've already chosen the best response.4Haha, don't have to worry about them ;)
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