| Author |
Message |
rtw83
Joined: 30 Nov 2006
Posts: 1
|
 Posted: November 30, 2006 6:04 AM Post subject: non-algebraic variable in expression |
 |
|
| Hello, lately when i use x like a variable for integrative or derivative operations the ti displaied me this message "non-algebraic variable in expression". I can do this operatins whit variables y, z, or t, etc but not whit x. Why? What can i do? |
|
| Back to top |
|
 |
bostonvaulter
Joined: 13 Oct 2006
Posts: 43
Location: USA
|
| Posted: December 1, 2006 12:18 PM Post subject: |
|
|
what do you get when you just put in x?
you could try clearing the variables. |
|
| Back to top |
|
|
bluesuit
Joined: 08 Nov 2006
Posts: 42
|
| Posted: December 7, 2006 10:15 PM Post subject: re: |
|
|
| You could also try placing a "*" between all letters |
|
| Back to top |
|
|
baseballdude_
Joined: 20 Sep 2006
Posts: 76
Location: Wisconsin
|
| Posted: December 8, 2006 9:32 PM Post subject: Re: re: |
|
|
| bluesuit wrote: | | You could also try placing a "*" between all letters |
Good point. Remember that the TI-89 allows for more than just single character variables. Therefore xy is not variable x times variable y, it is variable xy. |
|
| Back to top |
|
|
thenand
Joined: 31 Oct 2007
Posts: 1
|
| Posted: October 31, 2007 5:12 PM Post subject: |
|
|
i got the same problem.
for example:
if i want to derive the function y=x^2 i enter d(x^2,x) and it gives me the error: "Non-algebraic variable in expression"
BUT if i derive the function y=2*x i enter d(2*x,x) and it gives me the correct answer.
Can sb tell me how to calculate it correctly?
I got the TI-89 Titanium |
|
| Back to top |
|
|
pstahl1
Joined: 07 Dec 2007
Posts: 1
|
| Posted: December 7, 2007 8:04 PM Post subject: Same problem |
|
|
| Im near the end of my calc 3 class and bought the ti-89 titanium because everyone told me I would save time by using it to find Integrals. But when i follow the instructions in the manual to find the integral I get the error: 'Non-algebraic variable in expression'. Ive tried looking everywhere for an answer but couldn't find any answer on how to solve this problem. any help would be appreciated. |
|
| Back to top |
|
|
lovecalcs
Joined: 26 Dec 2007
Posts: 1
|
| Posted: December 26, 2007 1:41 PM Post subject: this may be the problem |
|
|
You might have a value stored to your variable...
Try going to F6 and clearing your variables a-z, that should help! |
|
| Back to top |
|
|
|
