Appendix B: Reference Information 563
8992APPBDOC TI
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bdoc (English) SusanGullord Revised:02/23/01 1:54 PM Printed:02/23/01 2:24 PM Page563 of 34
A complex number has real and imaginary components that identify
a point in the complex plane. These components are measured along
the real and imaginary axes, which are similar to the x and y axes in
the real plane.
The point can be expressed in
rectangular form or in either of
two polar forms.
The i symbol represents the
imaginary number ÀL1 .
r
θ
b
a
As shown below, the form that you can enter depends on the current
Angle mode.
You can use the form: When the Angle mode setting is:
a+biRadian or Degree
r ei
qRadian only
(In Degree angle mode, this form causes a
Domain error.)
(rq) Radian or Degree
Use the following methods to enter a complex number.
To enter the: Do this:
Rectangular form
a+bi
Substitute the applicable values or variable
names for a and b.
a « b 2 )
For example:
Entering Complex Numbers
You can enter complex numbers in the polar form (rq), where
r is the magnitude and q is the angle, or polar form r e
i
q. You
can also enter complex numbers in rectangular form a+bi
Overview of
Complex Numbers
Note: To get the
i
symbol,
press
2 )
, do not
simply type an alphabetic i.
Imaginary
Real
Expressed as
a+bi, reiq, or
(rq)