What is the integral of #int sin (e^t)#?

Question

3258 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-01-21T19:28:11

It is called the sine integral. It cannot be expressed using a finite sum of more elementary functions.

You can read more about the sine integral here: http://mathworld.wolfram.com/SineIntegral.html .