let cos(x) = ?

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- Mar 21st 2010, 08:29 PMSelimIntegration
let cos(x) = ?

- Mar 21st 2010, 09:05 PMharish21
See this link:

integrate 1/(3+2cosx) - Wolfram|Alpha

Click on "show steps" - Mar 21st 2010, 10:03 PMSelim
How did they know to do that? (Wait)

- Mar 22nd 2010, 02:55 AMmr fantastic