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itsmekly
Joined: 12 Dec 2006
Posts: 2
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 Posted: December 12, 2006 4:29 PM Post subject: Non-algebraic variable error |
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Help! I have a huge calculus exam tomorrow and my ti-89 is messed up. Each time I try to do an integral, it says: Non-algebraic variable in expression. What have I done and how do I fix it?
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bostonvaulter
Joined: 13 Oct 2006
Posts: 43
Location: USA
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| Posted: December 12, 2006 9:41 PM Post subject: |
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did you try clearing a-z?
try pressing [AND]+[F1]+[1]
Other than that you'll probably have to reset your calculator. link |
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bluesuit
Joined: 08 Nov 2006
Posts: 42
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| Posted: April 29, 2007 3:09 PM Post subject: |
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This is because the variable you are integrating with respect to (for example "x") has a real value (if you ask what "x" is it will return a value rather than "x"). You need to delete the variable you are using.
You can delete (clear) any variable by pressing the keys:
[2nd], [- (VAR-LINK)], arrow to the variable, [<- (DEL)], [ENTER]
Good luck,
Bluesuit |
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