Let

I understand everything until the end. Specifically,

how to get

Any help would be greatly appreciated. Thanks.

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- Apr 20th 2008, 09:04 PMkid funky friedTrig Substitutions
Let

I understand everything until the end. Specifically,

how to get

Any help would be greatly appreciated. Thanks. - Apr 20th 2008, 09:16 PMo_O

Note that:

Can you see how it fits ? - Apr 20th 2008, 09:22 PMTheEmptySet
- Apr 20th 2008, 09:27 PMkid funky fried
How did you know-

BTW, I was supposed to use a reference triangle.

Thanks for your reply. - Apr 20th 2008, 09:32 PMo_O

- Apr 20th 2008, 09:32 PMkid funky fried
Got it, I understand now. Thanks so much!

- Apr 21st 2008, 11:46 AMKrizalid
A reciprocal substitution also works. (I dunno why people don't use it. :D)

- Apr 21st 2008, 01:38 PMMathstud28
- Apr 21st 2008, 03:17 PMKrizalid
- Apr 21st 2008, 03:19 PMMathstud28
- Apr 21st 2008, 03:20 PMKrizalid
Go from there by yourself, you'll see.

- Apr 21st 2008, 03:28 PMMathstud28
- Apr 21st 2008, 03:33 PMMathstud28
- Apr 21st 2008, 03:35 PMo_O
That's an interesting sub o.O

- Apr 21st 2008, 03:36 PMKrizalid
It's really helpful, but not always works. In this cases you can turn the integral into an easy one.