Texas Instruments TI-84 PLUS - Graphing Calculator User Manual

Chapter 2: Math, Angle, and Test Operations 51
On the TI-84 Plus, complex numbers can be stored to variables. Also, complex numbers are valid
list elements.
In Real mode, complex-number results return an error, unless you entered a complex number as
input. For example, in Real mode
ln(L1) returns an error; in a+bi mode ln(L1) returns an answer.
Entering Complex Numbers
Complex numbers are stored in rectangular form, but you can enter a complex number in
rectangular form or polar form, regardless of the mode setting. The components of complex
numbers can be real numbers or expressions that evaluate to real numbers; expressions are
evaluated when the command is executed.
You can enter fractions in complex numbers, but the output will always be a decimal value.
When you use the n/d template, a fraction cannot contain a complex number.
"
You can use division to compute the answer:
Real mode a+bi mode
$$

Texas Instruments TI-84 PLUS - Graphing Calculator Specifications

General

Type	Graphing Calculator
Display Type	LCD
Screen Resolution	96 x 64 pixels
Processor	Zilog Z80
Memory	24 KB RAM, 480 KB Flash ROM
Power Source	4 AAA batteries (with backup lithium battery)
Connectivity	I/O port
Weight	7.4 oz (210 g)
Software	TI-OS (Texas Instruments Operating System)