Hp50g displaying function definition as graphics

[Wes Loewer]

Now that you have defined f, you can evaluate f at any value by putting that value on the stack and pressing f (not RS f). So if you want the expression in terms of 'X', simply put 'X' in single quotes on the stack and press f to evaluate the expression at 'X'.

If you have not defined 'X', you can save a keystroke by using just X without the single quotes.