integral ... hard?

**jorgeston** · May 4th 2008, 04:26 PM

Calculate $\int_0^x \dfrac{(\lambda t)^{n-1}exp(-\lambda t)}{(n-1)!}dt$

**Krizalid** · May 4th 2008, 04:33 PM

You can't, unless $x\to\infty.$

I didn't answer your question in FMAT since I thought that it was a typo.

**mr fantastic** · May 4th 2008, 04:34 PM

Originally Posted by jorgeston

Calculate $\int_0^x \dfrac{(\lambda t)^{n-1}exp(-\lambda t)}{(n-1)!}dt$

Following from what special K said, I've had reason to consider very similar. Read the attachment.

**jorgeston** · May 4th 2008, 05:00 PM

thanks for your answers.

This integral appears in an continius distribution problem ( probability and statistics)
, and $x=30$ specifically

**mr fantastic** · May 4th 2008, 06:07 PM

Originally Posted by jorgeston

thanks for your answers.

This integral appears in an continius distribution problem ( probability and statistics)
, and $x=30$ specifically

If you've read the attachment you'll see why integral terminals like the ones Krizalid mentions are required. Post the whole question.

Thread: integral ... hard?