Sharp EL-9650, Operation Manual, Page: 81 / 373

71
MANUAL CALCULATIONS
<Example>
Find the imaginary part of the complex number “(15+2i)
2
”.
Press
≥H3(
15
+
2
Ï
) ) ®
[abs(]: finds the absolute value (same as
≥
, [B NUM],
and [1 abs(]).
[arg(]: finds angle “ x + yi ” when converting
θ
(rectangular coordinates) to polar coordi-
nates)
Formula:
θ
=tan -1 (
y
/
x
)
<Example>
Find angle (argument) of “7+5i” (angles mode:Deg).
Press
≥H5
7
+
5
Ï
)®
.
Calculations can also be performed.
<Example>
Find the complex conjugate of “(5+2i)
×
(3–4i)”.
Press
≥H1(
5
+
2
Ï
)j(
3
-
4
Ï ))®
.
[real(]: finds real part of a complex number in polar form
<Example>
Find real part of polar coordinates “15 30” (angle
mode:Deg)
Press
≥H2
15
ϯ
30
)®
.
* Angles can be entered using Deg, Rad, and Grad modes.
[image(]: finds imaginary part of a complex number in polar form.