Question about Texas Instruments TI-84 Plus Calculator

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My calculator only graphs one of my functions at a time and I need it to do all of them at once so I can calculate intersections and such. I have the TI-84 Plus. Thanks!

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The following should help draw several graphs.
When you enter a function you should press [ENTER] to validate. At the same time, the cursor moves to the next line. Verify that the = sign on the equation already entered is still highlighted.
If for some reason the = sign of an equation is no longer highlighted, use arrow keys to move cursor on the = sign and press [ENTER].

If only one = sign remains highlighted and all others are not, then in all probability the application Transfrm has been executed before and is still lingering in RAM. When in RAM, it takes over the graphing capabilities of the native OS. This prevents you from drawing more than one graph.You must unload it from memory.

  1. Press the [APPS] key.
  2. Scroll down to the line that shows Transfrm.
  3. Highlight it and press [ENTER].
  4. In following screen you are invited to Uninstall or continue.
  5. Press the number to the left of Uninstall. Validate if need be.
  6. Return to the Y= editor to type in functions to graph.

Posted on Oct 19, 2010

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31d11b8f-3634-4950-b0a8-22dfc733c995.jpg

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b1cd8b8a-de8e-4718-a652-2f3aff246e28.jpg

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576eff6a-ca6c-4471-b934-fb86513193cf.jpg



6bb5d17f-69df-4ff9-9780-ed0a7be1d0aa.jpg
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ce766af9-0700-4826-b12a-0c98a9589a60.jpg

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You will be asked to select the second function, then the lower bound and upper bound. As you see on the previous screen capture, the coordinates of the intersection point are given with 3 decimal digits.

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6d8395f7-b10e-4d9e-a7e6-45beadb303a3.jpg76f72147-9dcf-457f-a122-ae70490e2815.jpgThe following screen is displayed with at the top the setting Float.
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3acdb05f-f573-4e5e-a467-03db35a80ea2.jpg

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I have a TI-Nspire Graphic Calculator (Not the CAS.) I had a couple of questions about the calculator. First off, how do I limit the domain on a function that I am graphing. For example, I am graphing y=x...


simply divide the function by the domain you wish.

In your example, you wanted to graph y=x for x>=0.
You should graph the function f1=(x)/(x>0)

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1 Answer

Please help plotting graphs on TI-83 plus


I believe I already showed you with a profusion of details how to graph functions on the calculator. It would very kind of you to refer to the post that answered your question, so as not to make us answer it all over again. Much appreciated.

Read the following to use the intersection function.
  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.

Here are some screen captures
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May 12, 2010 | Texas Instruments TI-83 Plus Calculator

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