Math Is Fun Forum

Identity

Member

Registered: 2007-04-18

Posts: 934

A trigonometric integral

Can someone plz help me with

thanks

Last edited by Identity (2009-12-08 00:27:22)

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: A trigonometric integral

Hi identity;

For the second one did you try to use this identity. Got it from a table.

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

Identity

Member

Registered: 2007-04-18

Posts: 934

Re: A trigonometric integral

Thanks bobbym, but is there a way to do it using common integration techniques that doesn't involve such an esoteric expansion?

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: A trigonometric integral

Hi identity;

This one is a little bit less esoteric:

So

---

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.