Question about Texas Instruments TI-84 Plus Calculator

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Button Problems I need some help with my calculator. Recently my right side buttons ( VARS, TAN, ), 9, 6, and 3) have been messing up. Whenever I press those buttons, the negative (-) symbol always comes up. Whenever I press 2ND and then one of the buttons, answer (Ans) comes up. Does anybody know how to fix this? Things I've tried: -Changed batteries -Cleared RAM -Cleared all memory Thanks for any help.

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Happened to me be4, except all my buttons didn' t work. I just did what people do in movies. throw it aroun, step on it, bang it against walls, desks , ect. Then my teacher took it away. The banging cleared all my ram. It was weird, but it started working.

I think the circuit board moved, and i hit it back into alignment.

Posted on Jun 03, 2008

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1 Answer

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May 15, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

When I press a key in the column with vars, tan, ), 9, 6, 3, or (-), I only see a dash. All other keys work fine.


it could be that one of the application cause this or maybe the ram is full, if none of this help it could be an Hardware Failure
if you want to fix this problem let me know
ecrdn@yahoo.com

Jack

Oct 18, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

Whenever i put in sin or cos or tan on my calculator the wrong answer comes up, how do i fix this?


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Regression line


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I can not find the "Inv" button...


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1 Answer

TAN


Hello,
The TI-15 Explorer is for primary schools (low grades). If you know about trigonometry that is not the calculator that you need.

Look for any SCIENTIFIC calculator (the cheapest you can find at a dollar store ) will do the job.

Hope it helps.

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