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Arg

Arg[ z ] gives the argument of the complex number z.

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

See the Mathematica book: Section 1.1.5, Section 3.2.2.

See also: ArcTan, Sign.

Further Examples

The argument of a complex number z gives the angle that the line from

to z makes with the positive real axis.

In[1]:=

Out[1]=

This gives the arguments of the units in the complex plane.

In[2]:=

Out[2]=

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