link to a numerical integration recipe (Issue #3759)
Hm... Something is strange in here. I think GitHub must have changed the line endings or something (I used their web editor). I'll try to fix it locally.
 OK, now it's better. For some reason, using the web editor deleted and added every line in the file. A shame, because that would make adding changes to this document super fast.
 I edit on windows (though run everything on linux)

I added

`git config --global core.autocrlf input` seems to _ignore_ the line endings issue (IOW it will leave it as whatever it was and not change to your standard), I think if you edit on linux, you want this as True
 thank you!
 My pleasure :)

Yeah, I mean it also wasn't a problem on my local env (Linux + Emacs), but only in the web editor you get when clicking [the edit button](https://github.com/pydata/pandas/edit/master/doc/source/cookbook.rst) on [the file view](https://github.com/pydata/pandas/blob/master/doc/source/cookbook.rst). I'll report it to GitHub support.
 that's exactly the point it was rewriting the line endings
turn that autocrlf option on and you will be good
 @kermit666 i feel ur pain. scripts just refuse to run on my linux machine with windows line endings. if u run `dos2unix` on them and then `git add` you should be fine. for some reason github recommends the opposite which is that linux users set to `input` while windows users should set to `true` not sure exactly why.
