Solution 10352: Inputting Complex Numbers on the TI-85 or TI-86 Graphing Calculators.
How do I enter complex numbers on the TI-85 or TI-86 graphing calculator?
The TI-85 and TI-86 graphing calculators do not use the imaginary i symbol. The notation used to enter a complex number in rectangular form is to separate the real and imaginary parts using a comma. The syntax is: (real, imaginary). The notation to enter a complex number in polar form is to separate the magnitude and angle using the angle symbol. The syntax is: (magnitude < angle). The angle symbol is accessed by pressing [2nd] [,].
Please refer to the examples provided below:
Please Note: To activate complex mode press [2nd][CPLX].
(3+7i) would be input using [(] [3] [,] [7] [)])
(4-5i) would be input using [(] [4] [,] [(-)] 5] [)])
(2<5) would be input using [(] [2] [<,] [5] [)])
Please see the TI-85 and TI-86 guidebooks for additional information.
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