TI-83 Plus Activities 544
The Quadratic Formula
Displaying Complex Results
Now solve the equation 2X2 N X + 3 = 0. When you set a+b
i
complex
number mode, the TI-83 Plus displays complex results.
1. Press z † † † † † † (6 times), and
then press ~ to position the cursor over a+b
i
.
Press Í to select a+b
i
complex-number
mode.
2. Press y 5 (above z) to return to the
home screen, and then press ‘ to clear it.
3. Press 2 ¿ ƒ [A] ƒ [ : ] Ì 1 ¿
ƒ [B] ƒ [ : ] 3 ¿ ƒ [C] Í.
The coefficient of the X2 term, the coefficient of
the X term, and the constant for the new
equation are stored to A, B, and C, respectively.