could someone check this for me?

1.

2.

THANKS

Printable View

- September 27th 2009, 11:41 PMdifferentiateintegration of trigonometric functions
could someone check this for me?

1.

2.

THANKS - September 27th 2009, 11:48 PMCalculus26
Once you have int( 2cos^2(x)sin(x)dx)

Let u = cos(x)

then you have simply -2 int(u^2du)

isn't correct since du/dx would be cos(2x) - September 27th 2009, 11:49 PMProve It
- September 27th 2009, 11:52 PMProve It
- September 28th 2009, 12:00 AMdifferentiate
thank you. I get it now.

so for this one:

- September 28th 2009, 12:02 AMProve It