Sharp EL-9900 Operation Manual page 89

Chapter 5: Advanced Calculations — Advanced Keyboard
2 real( real( complex number )
Returns the real part
of a complex number
(or list of complex
numbers).
3 image( image( complex number )
Returns the imagi-
nary part of a
complex number (or
list of complex
numbers).
4 abs( abs( complex number )
Returns the absolute
value of a complex
number (or list of
complex numbers).
arg( complex number )
5 arg(
Takes the coordi-
nates (x
returns the θ.
Calculations using complex numbers
To calculate using complex numbers, select the sub-menu item 4
x ± yi or 5 r ∠ θ in the F ANSWER of the SETUP menu items.
The initial screen for the complex number calculation mode is the
same as for the real number mode.
Complex numbers can be noted using either 4 x ± yi (rectangular
coordinates) or 5 r ∠ θ (polar coordinates).
+
yi), and
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