improper integral involving e

**WartonMorton** · April 19th 2010, 03:48 PM

See attachment.

**pickslides** · April 19th 2010, 03:51 PM

You can find $\int xe^x~dx$ using integration by parts.

Do you know this method?

**WartonMorton** · April 19th 2010, 04:10 PM

Originally Posted by pickslides

You can find $\int xe^x~dx$ using integration by parts.

Do you know this method?

yah its like uv- integral of vdu

so is it xe^x - e^x ?

**pickslides** · April 19th 2010, 04:16 PM

Originally Posted by WartonMorton

yah its like uv- integral of vdu

so is it xe^x - e^x ?

Sounds good.

**WartonMorton** · April 19th 2010, 04:17 PM

so thus the improper integral is -1 ?

**pickslides** · April 19th 2010, 04:19 PM

That's what I get.

Thread: improper integral involving e