The principal argument of complex

Parent Previous Next

The principal argument of complex is a real value lying between -π (excluded) and +π (included) if the angle unit of the figure is the radian and  between -180 (excluded) and 180 (included) if the angle unit of the figure is the degree.

The formula of a real calculus is not allowed to refer to a complex number. Thus if you want to use the principal argument of a complex number you have first to create a principal argument of complex.

You can then refer to this calculus (which is a real calculus) in another real calculus.

Here is an example :

A complex number named z has been created (not null) and you wish to create the image of a point through a rotation angle of which is the double of double of z principal argument.

You must use menu Calculus - New real calculus - Principal argument of complex.

A dialog box pops up.

Select complex z in the list.

In the field Name of the calculus, type a.

Press OK.

When you will create the 'image of a point point through a rotation you will enter 2*a in the field angle of rotation.

Created with the Personal Edition of HelpNDoc: iPhone web sites made easy