Sharp EL-9650 - Page 81

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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.