Let

I understand everything until the end. Specifically,

how to get

Any help would be greatly appreciated. Thanks.

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- April 20th 2008, 08:04 PMkid funky friedTrig Substitutions
Let

I understand everything until the end. Specifically,

how to get

Any help would be greatly appreciated. Thanks. - April 20th 2008, 08:16 PMo_O

Note that:

Can you see how it fits ? - April 20th 2008, 08:22 PMTheEmptySet
- April 20th 2008, 08:27 PMkid funky fried
How did you know-

BTW, I was supposed to use a reference triangle.

Thanks for your reply. - April 20th 2008, 08:32 PMo_O

- April 20th 2008, 08:32 PMkid funky fried
Got it, I understand now. Thanks so much!

- April 21st 2008, 10:46 AMKrizalid
A reciprocal substitution also works. (I dunno why people don't use it. :D)

- April 21st 2008, 12:38 PMMathstud28
- April 21st 2008, 02:17 PMKrizalid
- April 21st 2008, 02:19 PMMathstud28
- April 21st 2008, 02:20 PMKrizalid
Go from there by yourself, you'll see.

- April 21st 2008, 02:28 PMMathstud28
- April 21st 2008, 02:33 PMMathstud28
- April 21st 2008, 02:35 PMo_O
That's an interesting sub o.O

- April 21st 2008, 02:36 PMKrizalid
It's really helpful, but not always works. In this cases you can turn the integral into an easy one.