Hi, this is my quadratic equation program for the TI-81, altho it does
not graph anything, it might someday..feel free to modify it...
The program itself is pretty self explainitory just enter A B and C as it
says
The % sign means the square root sign...
^2 means hit the x squared button
-> means hit the store button
Name:Quad
Disp "ENTER A"
Input A
Disp "ENTER B"
Input B
Disp "ENTER C"
Input C
(-B+%(B^2-4AC))/(2A)->X
Disp "POSITIVE IS"
Disp X
(-B-%(B^2-4AC))/(2A)->Y
Disp "NEGITIVE IS"
Disp Y
End