1. ## Integral calculation

Hi! I have a problem solving this integral.Could someone help me or give me an advice?

$\displaystyle$
$\displaystyle \int_{0}^{2\pi} cos(\theta)exp(a \cos(\theta))d\theta$

2. Originally Posted by hokutose
Hi! I have a problem solving this integral.Could someone help me or give me an advice?

$\displaystyle$
$\displaystyle \int_{0}^{2\pi} cos(\theta)exp(a \cos(\theta))d\theta$

$\displaystyle \int exp(\cos(a\theta))d\theta$