Question about Texas Instruments TI-84 Plus Calculator

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My equipment only turns on and after that I can not do any thing.

My TI84 turns on and the blinking square it is where should be, but after that I can not do anything.

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Spray it with a bottle of compressed air.

Posted on Dec 14, 2007

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Posted on Jan 02, 2017

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Turn signal replay needs to be replaced. Square things usually under the driver side footwell.

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It seems to me that you get the loading bar when you switch keypads. I just switched keypads, and when I reinserted the TI84 Plus keypad back again I found my last TI84 Plus screen contents still displayed.
As to the RAM cleared message, it probably is related to the batteries being depleted.
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My TI84 plus silver edition calculator is giving me an incorrect sign whenever I do an exponential function. When I type in -25^2, it gives me -625 instead of 625. How do I fix this?


It's giving you the correct answer. It's calculating the negative of 25 squared. 25 squared is 625, and the negative of that is -625.

If you want to calculate the square of negative 25, you need to tell the calculator that.

Press ( (-) 2 5 ) ^ 2 ENTER .

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Not running. Blinking red light for bucket full. Code flashing is CH 24.


Leo, have you removed and emptied the buck and reinstalled it? If not, that's the first thing you need to do. If you have already done that, remove the bucket and if it's equipped with a float valve in the top of the bucket, make sure the float is not stuck in the UP position. If it is, jiggle the arm of the float, so that it will return to the DOWN position.

If not equipped with a float valve, when you reinstall the bucket, be sure that it fits "squarely" from top to button into the holder.

NOTE: Before attempting any of the above, turn the unit OFF and unplug it it.

Hope this helps you troubleshoot and solve the problem.

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How do I graph equations like x^2 + y^2 = 9 on my TI84 Plus silver calculator?


This is the equation of a circle centered on (0,0) and with radius r=3. You can draw it as a conic section.For that you will need the conics application. Look for it on education.ti.com
You can also draw it as two branches: y1=+ square root (9-x^2) and y2=-square root(9-x^2). The two parts may not overlap at the points on the the x-axis, but if you are willing to accept the calculator limitations you will have your graph.

May 21, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

I have installed the new operating system on my TI84 Silver Editions. It will not convert the square root of 5 to a fraction (thank goodness) but it does convert the square root of 720 to a fraction :( ...


The calculator is showing you its best fractional approximation to the number. To not have it do that, press MODE, up-arrow four times to get to the "ANSWERS:" line, use left/right arrow to highlight "AUTO" then press ENTER. Press 2ND [QUIT] to exit the mode screen.

Mar 16, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

My TI84 Plus will not turn on, even with new batteries. I have tried both faces, and it will not turn on


Hello,
The Texas Instruments FAQ area of their web site has on such question answered. You may want to read the relevant article. Scroll down the page and look for the part on the TI83/TI84 Plus family.
Hope you will find the answer to your calculator's woes.

Oct 30, 2009 | Texas Instruments TI-84 Plus Calculator

2 Answers

Ti84 Plus Turns on, and turns off right away.


I had the same problem like yours. First, I reset the RAM and then it no longer turned off right away; but it responded extremely slowly. Second, I tried to install the new OS for it, but unsuccessful until I blowed really hard several times into the round connector. After that, the cursor started blinking. Finally, I downloaded the new OS into it and hoped that the problem never happen again.
You go to http://education.ti.com and follow their procedures to reset the RAM.

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