Entering complex numbers

Complex numbers in the calculator can be entered in either of the two Cartesian representations, namely, x+iy, or (x,y). The results in the calculator will be shown in the ordered-pair format, i.e., (x,y). For example, with the calculator in ALG mode, the complex number (3.5,-1.2),is entered as:

„Ü3.5‚í\1.2`

A complex number can also be entered in the form x+iy. For example, in ALG mode, 3.5-1.2iis entered as:

3.5-1.2*‚¥`In RPN mode, these numbers will be entered using the following keystrokes:„Ü3.5‚í1.\`

(Notice that the change-sign keystroke is entered after the number 1.2 has been entered, in the opposite order as the ALG mode exercise), and

³3.5-1.2*‚¥`

(Notice the need to enter an apostrophe before typing the number 3.5-1.2i in RPN mode).

To enter the unit imaginary number type : „¥(the I key).Polar representation of a complex number

The polar representation of the complex number 3.5-1.2i, entered above, is obtained by changing the coordinate system to cylindrical or polar (using function CYLIN). You can find this function in the catalog (‚N). Press

µbefore or after using CYLIN. Changing to polar shows, and changing the angular measure to radians, produces the result:

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