
#1
Feb2507, 05:08 PM

P: 4

1. The problem statement, all variables and given/known data
indefinite integral dx/((e^x)(sqrt(1e(2x)))) using integration by parts evaluate the integral. 2. Relevant equations integral u*dv = u*v integral v*du 3. The attempt at a solution To be completely and entirely honest i am not even sure where to start with this problem. I have finished other integration by parts homework questions in this assignment but this one i can't find something to choose for u and dv that will work out correctly. I have been at this problem alone from almost 2 hours. Any help would be greatly appreciated. 



#2
Feb2507, 07:35 PM

P: 54

Are you sure it wasn't
[tex] \sqrt {1e^{2x}} [/tex] instead of [tex] \sqrt {1e(2x)} [/tex], since that is a very strange way of writing it. If so, just remember that [tex] \frac {1}{e^{x}} = e^{x} = \sqrt {e^{2x}} [/tex] and set [tex] u = e^{2x} [/tex] 



#3
Feb2507, 07:40 PM

P: 4

It was supposed to be
1/ [tex] \sqrt {1e^{2x}} [/tex] **How did you get that equation to show up that way? I just copy and pasted what you had to make it work this time and was curious how i would go about doing that. 



#4
Feb2507, 08:04 PM

P: 54

Using Integration by Parts
There is a \frac command in LaTex. To use it just type \frac {numerator}{denominator}
So your problem would show up as: [tex] \int {\frac{dx}{e^{x}\sqrt{1e^{2x}}}[/tex] **Also check out this guide to LaTex typesetting http://www.physicsforums.com/misc/howtolatex.pdf 



#5
Feb2507, 08:45 PM

P: 4

Thank You for your help. It is really appreciated.




#6
Feb2607, 06:36 AM

Math
Emeritus
Sci Advisor
Thanks
PF Gold
P: 38,902

If nothing else there is a "^" key on your computer that can be used to indicate exponents.



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