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#1 2010-01-24 07:34:39
- henrybrice
- Member
- Registered: 2009-11-09
- Posts: 6
integral of e^x
I know that the integral of e^x = e^x, but what do I do if it is e^f(x)?
or for a more concrete example, e^3x or e^-x
I can't just subsitute u, because the du/dx doesn't work out and the whole thing just gets messier...
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#2 2010-01-24 07:52:42
- Ricky
- Moderator
- Registered: 2005-12-04
- Posts: 3,791
Re: integral of e^x
What are you using for your u?
"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."
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#3 2010-01-25 02:10:50
- rzaidan
- Member
- Registered: 2009-08-13
- Posts: 59
Re: integral of e^x
Hi henrybrice
Novice
You can use integration by substitution u=3x and continue
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