## Calculation with complex Numbers

This calculator allows to perform the four basic arithmetic operations and the
most important functions with complex numbers.
Real part and imaginary part of a number are entered separately. To switch from
one field to another press the TAB-Key or click the desired input field.

The buttons Clear Entrance
and All Clear
erases the last input v.v. all inputs.

You may enter your data with the mouse or the keyboard and the rules of algebraic hierarchy
are valid. Functions can be called by their initials, the square root by 'R'.

The second display shows the polar coordinates, what means the length and angle of
the corresponding vector in the Gaussian plane. Clicking the display switches
between degrees and radians.

### Example:

( 3 + 4i )( 3 - 4i ) = 25

To change sign use the Plus/Minus button because
the Minus button does a subtraction.

### See also:

Wikipedia: Complex number