How do you exclude values from solutions on a TI-89?

[Euphoriet]

I'm wondering how to set my ti 89 to ... " | x does not equal 3, and x does not equal 4 " for any partifular function... I tried a comma and a "|" still no go...

 

[Sartak]

... | x =/= 3 and x =/= 4

The =/= being the = sign with the slash through it, available through diamond + =

The and is literally the string "and" which you can type in manually. I prefer to keep a menu item for it. :)