Question about Texas Instruments TI-84 Plus Calculator
I suspect (no, I am sure that) you ran the dynamical graphing application called "Transfrorm" and since you did not terminate it, it is still in the memory of the calculator, having taken over certain functionalities of the Operating System.
Press [APPS], and scroll UP to reach the bottom of the list of applications more quickly. Locate the "Transfrorm" application, point to it and press [ENTER].
In the display you are prompted
Now you recover the usual Y= function editor.
Hope it helps.
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Posted on Dec 12, 2009
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Posted on Jan 02, 2017
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