The question:

My attempt:

Let u = 5 + 2cosx

du = -2sinx dx

However, the answer in my text is:

What am I doing wrong? Am I simplifying too far? Thanks.

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- Oct 29th 2010, 10:48 PMGlitchAnother definite integral problem
**The question:**

**My attempt:**

Let u = 5 + 2cosx

du = -2sinx dx

However, the answer in my text is:

What am I doing wrong? Am I simplifying too far? Thanks. - Oct 29th 2010, 10:59 PMpickslides
- Oct 30th 2010, 12:04 AMharish21

is the same as - Oct 30th 2010, 12:13 AMGlitch
Thank you guys.