Question about Texas Instruments TI-84 Plus Calculator

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Ti-84 plus all answers negative when using 1e99

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6ya6ya
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Posted on Jan 02, 2017

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SOURCE: wrong trigonometry data

hit the mode button and switch it from radian to degrees. hope this helps it should. good luck

Posted on Feb 03, 2008

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rockitman187
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SOURCE: Can't find the % button on TI-84 plus :(

Just hit the 2ND key and the 0 (catalog key)scroll down to percentage or just divide the answer by 100.

Please rate this a fixya

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Posted on Feb 13, 2009

  • 11 Answers

SOURCE: comma key on TI-84 Plus Siver Edition calculator.

The comma key on the TI 84 SE is above the 7 key, and it is just left of (, right of x squared, and below SIN. thats where the "," key is. If you're asking something else, please clearify. My understanding is that you don't know where the comma key is. 

Posted on Mar 18, 2009

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SOURCE: Find the antilog on the TI-84 Plus for finding pH in chemistry problems

I'm not specifically familiar with the TI83 or TI84 but I've used a lot of TI calculators in my time, so I'll give it a try. If your trying to find the antilog of a number in base 10 enter the number and hit the (10 to the X) button. If you're trying to find the antilog of a number in in base e (natural log), enter the number and hit the (e to the X) button.

Posted on May 29, 2009

  • 33 Answers

SOURCE: Dark screen on my TI-84 plus. What to do?

Press the 2nd key (yellow one) and then press the UP arrow to increase brightness or down to decrease but seems like you to need to press UP arrow.

Posted on Jul 17, 2009

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1 Answer

I have a TI-84 and when i put a negative number it appears Ans before how can change that?


Use the (-) key to the right of the decimal point key when entering a negative number. The - key to the right of the 6 key is for subtracting something from something else. In order to subtract from something, if you don't specify anything then the calculator uses the previous answer as designated by "Ans." The same thing happens with the + key for example, because it adds something to something else.

Feb 01, 2014 | Texas Instruments TI-84 Plus Silver...

1 Answer

How do you enter 1E99 on the calculator


Press 1 2ND [EE] 9 9

EE is the second function of the , key, just above the 7 key.

Oct 30, 2013 | Texas Instruments TI-84 Plus Calculator

2 Answers

My Ti-84 plus silver is giving me wrong answer when I use normalcdf. I used video guide to make sure my entries were correct. lower:280 upper: 1E99 mu:272 sigma:9 I get answer .81296 the video and correct...


That is what I get with your numbers on the TI84 Plus Silver Edition 0.1870313608. I get the same on the TI83 Plus. What can I say?. Apart from an error entering the numbers ( a 6 for a 9, a 3 for an 8) I cannot think of anything else. Sorry.

Oct 26, 2013 | Texas Instruments TI-84 Plus Silver...

1 Answer

I can't put a negative number in the matrix without a syntax error


Use the (-) key just to the right of the decimal point, not the - key. The second key is for subtraction.

Jan 27, 2013 | Texas Instruments TI-84 Plus Calculator

1 Answer

Is there a positive/negative sign all in one on the ti-84? like to use for the quadratic formula... -b (plus or minus[symbol here?]) the square root of... the rest


No. The calculator can calculate either value at one time, but not both. You can calculate the positive and then the negative (or the other way around), but a single calculation cannot produce two answers. A calculation can produce, for example, a list with two elements, but that's still a single result (a list).

Feb 19, 2011 | Texas Instruments TI-84 Plus Silver...

2 Answers

I when i power -3 to the second i get -9 when it should be just 9


No, is giving you the correct result. When you negate 3-squared, you should get -9. If you want to square negative three, you need to type it in as ( (-) 3 ) ^ 2 or ( (-) 3 ) x^2

There is a difference between (-3)^2 and -(3^2). If you omit the parentheses, the calculator will interpret it as the latter.

If in doubt, use parentheses.

Feb 17, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I ask my TI-83 Plus to calculate (-64)^(3/2) The TI-83 Plus says the answer is -512i, but I think the answer should be 512i. Is the calculator wrong or am I?


You're both right, in a way. (-64)^3 is -262144. The square root of that is +/- 512i. Take your choice as to the sign.

For what it's worth, the TI-84, TI-86, TI-89, and the HP 50g all go with the negative value.

Jan 24, 2010 | Texas Instruments TI-83 Plus Calculator

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