# 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

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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
```

Asked: **
2015-11-10 17:07:47 -0600
**

Seen: **98 times**

Last updated: **Nov 11 '15**

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