Clear A-Z - Texas Instruments TI-89 Manual Book

Clear a-z

Description
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Tools

Clear a-z

solve(aøxñ+bøx+c=0,x)
Note: If variables have already been assigned a value, the calculation may produce misleading results.
To prevent this, select 1:Clear a–z before starting the calculation.
Tip: You can make sure that a variable you want to keep is not inadvertently deleted by 7:Clear a-z.
Simply name any variable that you want to retain using multiple characters.
Example
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Note: You cannot use the Clear a-z command in a program; instead, use the DelVar command.
TI-89 / TI-92 Plus / Voyage™ 200 PLT Statistics with List Editor App
7:Clear a-z
Tools 7:Clear a-z Clear a-z
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Tools Menu 30