Can anyone help me:
$$\int {\frac{{dx}}
{{\sqrt {1 + {e^{2x}}} }}} $$

Question

Can anyone help me: 
$$\int {\frac{{dx}}
{{\sqrt {1 + {e^{2x}}} }}} $$

anonymous · Answer

I have a vague feeling it should do  integration by parts...Or make some change to the form...

anonymous · Answer

Please take your time.

anonymous · Answer

use wolfram.. :D

anonymous · Answer

I know the answer. But it is a question on a exam. So...I have to know how...

anonymous · Answer

wolfram is pretty good at explaining in my eyes.

anonymous · Answer

Sorry, I confused myself a little: I think you have to look at the expression under the sqare root as 1+(e^x)(e^x), which would mean you could use a trig substitution... I am just learning trig substitution though, but it's the only way I see to do it. Let x=1tan(theta) and see what happens... Not sure it will work.

anonymous · Answer

I guess a u substitution would get you to the same place... sorry i wasn't much help :/

anonymous · Answer

I got it . You are right, i done it with trig substitution. Thanks a lot.

anonymous · Answer

Sweet, I'm glad you got it because I got stuck, haha. What was the answer?