Arg
 Usage
• Arg[z] gives the argument of the complex number z.
Notes
• Mathematical function (see Section A.3.10). • Arg[z] is left unevaluated if z is not a numeric quantity. • Arg[z] gives the phase angle of z in radians. • The result from Arg[z] is always between  and  . • Arg[z] has a branch cut discontinuity in the complex z plane running from  to  . • New in Version 1.
| 
