This question is not the same as my last one. How do you find the $n$-th derivative where $n$ is a variable? 

For example, you can find the nth derivative for a specific $n = 3$

```
D[Log[1 + x], {x, 3}]

```

but how do you get *Mathematica* to show the $n$-th derivative for $n$ as a general variable?

For example, [from Wolfram Alpha](http://www.wolframalpha.com/input/?i=nth+derivative+of+x%5E-1&h=1)