Solution 12098: Graphing Piecewise Functions on the TI-89 Family, TI-92 Family, and Voyage™ 200 Graphing Calculators.
How do I graph piecewise functions on the TI-89 family, TI-92 family, and Voyage 200 graphing calculators?
When entering a piecewise function on the TI-89 family, TI-92 family and Voyage 200, use the With command ( | ). This command is used to separate the function and condition. Using the TI-89 family calculator, the With command is found above the [EE] key. Using the TI-92 family and Voyage 200 calculator, press [2nd] [K].
Piecewise functions are entered as follows:
Y = expression | condition
Example 1: y1 = 4(-x^2)|x<1
Example 2: y2 = x+3|x>3
Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information.