Really hard integral

1. Oct 31, 2004

relativitydude

Integral of exp(x)*sqrt( 5 - cos(x))

2. Nov 1, 2004

Tide

Is that a cosine or a hyperbolic cosine?

3. Nov 1, 2004

logicalman

Maybe you should try:

$$5-cosx = x^2$$

then take "log" on both sides and proceed from there. :tongue:

4. Nov 1, 2004

spacetime

Try integrating by parts.