TI-89 Problem - Fixing x==2 Issue

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  • Thread starter Thread starter mjayhunt
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    Ti-89
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Discussion Overview

The discussion revolves around a problem encountered with the TI-89 calculator, specifically regarding the variable x being incorrectly set to 2. Participants explore potential causes and solutions related to variable assignment and clearing settings on the calculator.

Discussion Character

  • Technical explanation, Homework-related

Main Points Raised

  • One participant reports that their TI-89 calculator outputs x as 2 and x^2 as 4, expressing confusion over how this occurred.
  • Another participant suggests that the issue may arise from having previously input "x=2".
  • A participant mentions a solution involving the function key (f6) to clear variable assignments, indicating they resolved the issue but remain uncertain about the initial cause.
  • Another response elaborates on how to set a variable using the STO function, indicating that typing '2' followed by STO and then the variable name assigns that value to the variable.

Areas of Agreement / Disagreement

Participants do not reach a consensus on how the variable x was initially set to 2, but they agree on the method to clear the variable assignment.

Contextual Notes

There is uncertainty regarding the initial conditions that led to the variable assignment, and the discussion does not clarify whether the problem is a common issue or specific to the participant's usage.

mjayhunt
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I just got a new TI-89 today, and it's really nice. The problem is, it thinks that x==2 for some reason. Any other variable works fine, but if I just do x and press enter, it says 2; and x^2 says 4. Not sure why, and I'm positive I never told it to do that. Any idea how to fix it? Thanks in advance.
 
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NVM, I figured out how to fix it (f6; clear a-z), but I'm not sure how I set it in the first place.
 
You may have input "x=2". Been a few years since I used my TI-89, but I think that happened to me a lot.
 
mjayhunt said:
NVM, I figured out how to fix it (f6; clear a-z), but I'm not sure how I set it in the first place.

You can set it by typing '2' then STO > (just above the 'ON' button) and then the variable you want (in your case 'x'. This will set x equal to 2.
 

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