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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- October 29th 2010, 09:48 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. - October 29th 2010, 09:59 PMpickslides
- October 29th 2010, 11:04 PMharish21

is the same as - October 29th 2010, 11:13 PMGlitch
Thank you guys.