### integration ends up with hypogeometirc function can not be done by sage

we know the integration of

```
1/(a^b+1)
```

with respect to a is going to get

2F1(1,1/a,1+1/a,-a^x)

where 2f1 is hypogeometric function. However, once we to that in sage, it is not possible to get results

```
sage: integrate(1/(x^b+1),x)
integrate(1/(x^b + 1), x)
```

hope this can be fixed up latter or have some alternative way to work around.