[Solved] Function AbsArg not available in Mathematica 9?

Questions
1

What am I doing wrong? I wanted to convert a complex number to its polar form (a+bi=x(Cos[y]+i Sin[y]), but when I tried to type AbsArg in Mathematica 9 it doesn’t recognize!!
For example, AbsArg[1+i].

Do I need to install a package or something, does this function AbsArg really exist in version 9?

This is absolutely nuts and super annoying how the function is on their site, but isn’t recognized for me.
Please help.

2

AbsArg was introduced in version 10.1. Functions Abs and Arg do work though. You can also make it yourself:

AbsArg[x_List] := AbsArg /@ x
AbsArg[x_] := {Abs[x],Arg[x]}

Note that this version is not deeply integrated but will work for simple cases.

3

Thanks so much, Sander. I was puzzled.