# Math Help - Find \int_{1}^{3}(\frac{e^{-t}}{t}dt)

1. ## Integral???

Calculate :
$
\int_{1}^{3}(\frac{e^{-t}}{t}dt)
$

2. Originally Posted by dhiab
Calculate :
$
\int_{1}^{3}(\frac{e^{-t}}{t}dt)
$
Why do you think this has an elementary answer?