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
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