How to Solve Equations using TI-89 TIT Calculator?

[2Xist]

Hi everybody,

i was using the " Solve( " function in TI-89 TIT (home) and i inserted the function (* THIS IS EXACTLY WHAT I TYPED IN *) :::::

solve(20=X(2),X)

i mean.. it should be 10 right?
but like it came up with the " memory error"

* I DID RESET MEMORY AND TRIED REINSTALLING OS <--lol
but none worked...

PLEASE TRY ON YOUR OWN CALCULATORS AND PLEASE HELP!

AGAIN PLEASE POST YOUR OWN RESULTS AFTER TRYING THE SAME EXACT EQUATION!

 

[The|M|onster]

the problem is with your input. Try:

solve(20 = 2*x,x) and it should work just fine.

 

[2Xist]

lol it worked !
thank you so much! lol
so was it just my calculator or did it happen to yours too??
i don't know know why i can't put X(2) when the brackets means multiplication as well...

 

[The|M|onster]

I received the error as well. When you enter x(2) the 89 thinks that you are treating x as a function of a variable when that variable is equal to the value 2, but you have not defined the function x. That is why you received the error. The TI-89 is a very smart calculator, so you have to be especially conscious of how you input.