Originally posted by Allegro
Hello Mr Polite,

None of the suggestions of sql_lall worked on my TI-83,so I tried a different approach.
I made a program called "FAC" , and the listing is as follows:

Prompt X
5X!+3X²->A
Disp"A=",A

You start with an integer , for instance 3, then 4 and so on.
You will find f(7)=25347.
oh so you're basically testing it? hmm good idea, I guess that works

btw an easier way to test would be to put the equation in Y1 (or Yn). then in the main section go to Vars and select Y1, so you can test numbers by entering Y1(7)

thanks, I guess I would just use this testing method, sounds like it works faster than any other method