Math, Angle, and Test Operations 2.19
82STAT~4.DOC TI-83 international English Bob Fedorisko Revised: 10/28/05 12:19 PM Printed: 10/28/05 12:20
PM Page 19 of 26
angle( returns the polar angle of a complex number or list of
complex numbers, calculated as tan
L1
(b/a), where b is the
imaginary part and a is the real part. The calculation is adjusted
by +p in the second quadrant or Np in the third quadrant.
angle(a+bi) returns tan
L
1
(b/a).
angle(re^(
q
i)) returns
q
, where Lp<
q
<p.
abs( (absolute value) returns the magnitude (modulus),
(real2+imag2)
, of a complex number or list of complex
numbers.
abs(a+bi) returns (a2+b2)
.
abs(re^(
q
i)) returns r (magnitude).
4Rect (display as rectangular) displays a complex result in
rectangular form. It is valid only at the end of an expression. It
is not valid if the result is real.
complex result
8Rect returns a+bi.
4Polar (display as polar) displays a complex result in polar form.
It is valid only at the end of an expression. It is not valid if the
result is real.
complex result
8Polar returns re^(
q
i).
angle(
abs(
4Rect
4Polar
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