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zzr0ck3rBest ResponseYou've already chosen the best response.1
what is the integral of ln(x)?
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
no that's the derivative
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
hint: let u = ln(x) and let dv = 1 dx
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
try not to just give answers? we can go to wolfram for that
 10 months ago

primeralphBest ResponseYou've already chosen the best response.0
@zzr0ck3r still not the final answer; but I'll take it off
 10 months ago

ChristosBest ResponseYou've already chosen the best response.1
xln(x) ? I still refuse to go by the answer :D
 10 months ago

primeralphBest ResponseYou've already chosen the best response.0
@Christos xlnx is not the answer. Use integration by parts
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
if you are just guessing you can go to wolframalpha and get the answer
 10 months ago

ChristosBest ResponseYou've already chosen the best response.1
I am not guessing I though x has a power of 1 so 1 at the end and outside of ln whatever is inside
 10 months ago

ChristosBest ResponseYou've already chosen the best response.1
I saw it somewhere long time ago but im not sure if its correct
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
u need to do integration by parts
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
is that what you are doing in class?
 10 months ago

ChristosBest ResponseYou've already chosen the best response.1
What is this, can you give me an example?
 10 months ago

ChristosBest ResponseYou've already chosen the best response.1
I am learning alone.
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
do you know what the product rule is with derivatives?
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
it is like the inverse of that, it is how we undo that rule.
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
I would google it and read on it, it takes practice
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
do you know u substitution for integration?
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
ok that "undoes" the chain rule, so now you need to learn by parts. there are both crucial to learning integration http://tutorial.math.lamar.edu/Classes/CalcII/IntegrationByParts.aspx
 10 months ago

ChristosBest ResponseYou've already chosen the best response.1
Look at this please: That's specifically what am trying to solve. http://screencast.com/t/0N48E4lhqM9
 10 months ago

zzr0ck3rBest ResponseYou've already chosen the best response.1
e^(2*lnx) = e^ln(x^2) = x^2 so you need the integral of x^2 not ln(x^2)
 10 months ago

ChristosBest ResponseYou've already chosen the best response.1
I solved it now :D I know how to find this thing very easy (x^3)/3 without any actual formula
 10 months ago
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