Math Help - Non-real Integrals...

1. Non-real Integrals...

Check if the next non-real integral convergent without computing.

int (1-->inf) e^(-sqrt(x))

Thanks!

2. $\int e^{-\sqrt x}dx=$
$(x=t^2 \: \: dx=2tdt)$
$=\int e^{-t}2tdt$

3. Originally Posted by Also sprach Zarathustra
Check if the next non-real integral convergent without computing.

int (1-->inf) e^(-sqrt(x))

Thanks!
In what sense is this "non-real"? Did you mean "improper integral"?

4. Originally Posted by HallsofIvy
In what sense is this "non-real"? Did you mean "improper integral"?

Yes, I'm translated this from Hebrew, sorry.

5. Originally Posted by Also sprach Zarathustra
Yes, I'm translated this from Hebrew, sorry.
Not a problem. My Hebrew (or just about any other language is far worse than your English, I am sure.