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Entering Complex Numbers; Polar Representation Of A Complex Number - HP 48gII User Manual

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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, 3.5-1.2i is 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
µ before or after using CYLIN. Changing to polar shows, and changing
the angular measure to radians, produces the result:
Page 4-2

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