# Sage says that a divergent integral converges

When i use the command N(integrate(e^(-x)/x,x,0,oo)) Sage returns 37.2, but this integral obviously diverges. Is there any way to fix this?

Sage says that a divergent integral converges

add a comment

0

Thanks for reporting!

Actually, it is a known bug, see trac ticket 14274.

Sympy seems not able to solve it either, though it is able to see that the integral of `1/x`

diverges at 0.

```
sage: import sympy
sage: x = sympy.Symbol('x')
sage: from sympy import oo
sage: sympy.integrate(1/x,(x,0,oo))
nan
```

Please start posting anonymously - your entry will be published after you log in or create a new account.

Asked: ** 2015-11-11 00:07:47 +0200 **

Seen: **252 times**

Last updated: **Nov 11 '15**

How do I understand the result of symbolic integrals

Plot picewise function + infinity, error message

Problem with sign / sgn and .n()

Plotting an integral with a variable as a limit

def f(x): evaluvates individually but not inside plot

Bug with absolute value of a complex variable?

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.