1) INT (arctane^x/2)/[e^x/2(1+e^x)]dx ??????

2)INT dx/[x(1+x^3+x^6)^1/2]????????

3)INT (e^2x)/(x^2-3x+2)dx ???????

4)INT (ch^2)(sh^2)dx????????

5)INT (ch^4)dx ????????

please help meeee:(

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- March 27th 2007, 07:56 AMberkanatcido u wanna solve perfect ıntegration questions?:)
1) INT (arctane^x/2)/[e^x/2(1+e^x)]dx ??????

2)INT dx/[x(1+x^3+x^6)^1/2]????????

3)INT (e^2x)/(x^2-3x+2)dx ???????

4)INT (ch^2)(sh^2)dx????????

5)INT (ch^4)dx ????????

please help meeee:( - March 27th 2007, 09:19 AMecMathGeek
Make sure you write these accurately:

INT (arctane^x/2)/[e^x/2(1+e^x)]dx

Do you mean:

INT arctan**(x/2)**/[e^**(x/2)***(1 + e^x)] dx ?

Go through all the problems that you need help on and make sure they are written accurately, otherwise I can't help you if I'm solving the wrong problem. - March 27th 2007, 09:50 AMberkanatci
- August 24th 2007, 07:54 AMtopsquark
- August 24th 2007, 09:07 AMred_dog
2)

Let

Then

Now

Now back substitute.

4)

5)

- August 24th 2007, 11:10 AMtopsquark
- August 24th 2007, 11:14 AMJhevon
- August 24th 2007, 11:40 AMThePerfectHacker
- August 24th 2007, 11:46 AMThePerfectHacker