Question about Texas Instruments TI-84 Plus Calculator

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My ti 84 is giving me the wrong answer for standard normal curve

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Could you post an example? Please provide the exact inputs you're giving it, the answer it's giving back, and the expected answer.

Posted on Oct 22, 2013

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Posted on Jan 02, 2017

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SOURCE: Can you Factor on a TI-84? IF not, does the TI-89?

Well, to answer part of your question, yes... the TI-89 does factor like this. it is inputted like this:

factor(6*x^2+11*x+4,x)

Check the catalog in the TI-84 (which is 2nd-zero) and look under F for factor()

Posted on Jan 19, 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

  • 88 Answers

SOURCE: wrong trig ratio

Your calculator is set in radians. Press mode key. Arrow down to 3rd line. Highlight degree and press enter. Your calculator is now in degrees, not radians. To get out of the mode screen and back to home screen, press 2nd and then mode.

Posted on Aug 06, 2009

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1 Answer

Gives wrong answers


Type:
ln(3)/(2ln(3)-ln(5))

See captured image below


bb37e439-ffe7-4d60-81bc-479a44cf9d15.jpg

Dec 06, 2013 | Texas Instruments TI-84 Plus Calculator

1 Answer

I'm using a Ti-84 plus and when I try simple division it gives incorrect answers. For example, when I enter 5/2 it answers 3. When I entered 50/100 it answers 1.


You apparently have your calculator set to display no digits to the right of the decimal point. 5/2 is 2.5, which rounds to 3, and 50/100 is 0.5, which rounds to 1.

To change the display setting, press MODE, highlight the desired settings on the first two lines, then press ENTER followed by 2ND QUIT. Try setting "NORMAL" and "FLOAT" and see what results you get now.

Oct 06, 2013 | Texas Instruments TI-84 Plus Calculator

2 Answers

TI-84 Calculator Gives Me the Wrong Logarithm Solution


"log(2)8" means "common logarithm of 2 multiplied by 8".

The TI-84 has three different logarithm functions.
log is the common (base-10) logarithm.
ln is the natural (base-e) logarithm.
logBASE lets you take the logarithm to any positive base.

If you want the log base 2 of 8, you want logBASE(2,8). You'll find the logBASE function in the catalog, accessible by pressing 2ND [CATALOG] ). CATALOG is the shifted function of the 0 key, the ) gets you to the Ls in the catalog.

Sep 30, 2012 | Texas Instruments TI-84 Plus Calculator

1 Answer

My TI-84 calculater is calculating the problems in a very weird way. For instance if i type in 2x2 it will give me the answer 4e0. Is there a way to fix it?


That is the right result: 2x2 is 4 times 10 to the 0th power. But if you don't want your answer in scientific notation, press MODE, highlight NORMAL on the first line, press ENTER, then press 2ND [QUIT]. (You can also select the number of digits on the second line, or FLOAT and let the calculator choose.)

Oct 07, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

My Ti-84 plus gives me an answer of "4E-4" when I multiply .02 times itself. How can I get it to show me the decimal answer instead of the E


Unfortunately, you can't. From the manual:

If [...] the answer cannot display in 10 digits (or the absolute value is less than 0.001), the TI-84Plus expresses the answer in scientifc notation.

Oct 05, 2010 | Texas Instruments TI-84 Plus Calculator

2 Answers

Im pressing in 2e^(2) and i get the answer 14.7781122 when it is suppose to be 4? What is wrong with my TI-84 Silver Edition?


Nothing is wrong w/ the calculator, e is the base for natural logarithms, therefore, you are getting the correct solution for the problem you typed. to get four, simply type 2 then the "squared" button (the button w/ a small 2 on it) and voila!

Sep 27, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

How do I use the intersect function on the TI-84 plus calculator


  1. You draw two or more graphs.
  2. After the graphs are displayed, press [2nd][TRACE] to access the (CALC)ulate menu.
  3. Select [5:Interesct]
  4. You will be prompted for a first curve: the equation of the curve will be displayed at the top left corner of the screen. If it is one the intersecting curves, press [ENTER]
  5. You will be prompted for the second curve. (You can move from one curve to another by pressing the UpArrow or DownArrow).
  6. After two curves are selected, you will be prompted for a guess for the X-value of an intersection point: you can use the keypad to enter a guess or use the left or right arrow to move the cursor towards a point of your choosing (if there are more than one point).
  7. After a short while the calculator gives you a solution.
  8. If it fails, you must make a better guess.

Apr 19, 2010 | Texas Instruments TI-84 Plus Calculator

2 Answers

Wrong trig ratio


Your calculator is set in radians. Press mode key. Arrow down to 3rd line. Highlight degree and press enter. Your calculator is now in degrees, not radians. To get out of the mode screen and back to home screen, press 2nd and then mode.

Aug 05, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

My TI-84 Plus gives answer as 2.145274703E14, what is E?


E is the calculators form of scientific notation. so 2.145274703E14
is really 2.145274703 x 10^14 or 214527470300000

Apr 08, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

Ti 84 is giving me the wrong answer. it show e


Possibly beacuse the settings are different try changing it back so the settings on the mode that are on the left hand side except for the clock to be all highlighted.

Feb 21, 2009 | Texas Instruments TI-84 Plus Calculator

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