Piecewise Function Grapher
Files:
PIECE.8xp

Use:
When the program starts, it will ask for the number of pieces in the piecewise function. Next it will ask for the first part or expression. Enter the first part (such as x, or x^2, or 1/x + 1, etc.). Next it will ask for the rule. The rule shows when to graph that expression. (Ex. x<3, x>-5, x>-2 AND x<5). An "x" will be shown to start it off. Next type in the test operation (>, <, and, or). Depending on whether it is an AND or OR rule, you may have to add more x's. IMPORTANT: For AND rules, don't type in something like -3<x<5. Use AND for it: x>-3 AND x<5. For those who don't know, the rule operators can be found by pressing the 2nd key, then the MATH key. It will repeat this process until you've filled all the parts, then will graph the piecewise function. The piecewise function is stored in Y1. The piecewise graphs are fully traceable.

Side notes: The program adds the "real(" function around the piecewise function in Y1 to prevent nonreal numbers confusing the calculator (such as when the squareroot function is used in one of the expressions). This program also switches your calculator into a+bi mode.
On another note, areas on the graph where no expression is graphed, the y-value will be 0.