Question about Texas Instruments TI-89 Calculator

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How do I graph an equation with TI 89?

How do I graph an equation with TI 89 The equation is S=48.4-6.1cos(pi*t/6)? Thank you so much!

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  • Holly Huang
    Holly Huang Nov 11, 2014

    Thanks I figured it out, my mode was in degree that was why! Thank you!

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Just open the Y= equation editor and enter your equation. Use X for T. Make sure the angle unit is in radians.

Posted on Nov 11, 2014

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: graphing

The first solution will allow you to watch your calculator graph two equations simultaneously rather than finishing one before graphing the next; it won't solve the problem of having the calculator unselect one equation when you select a second. To fix that problem, try the following:


In order to select additional graphs, the Transformation Graphing App will need to be uninstalled from the TI-83 Plus Family and TI-84 Plus Family. Uninstalling the App does not erase it from the calculator, it disables it from interfering with the normal graphing modes. Below are the steps to successfully uninstall the App.

  • Press [APPS] key
  • Select Transfrm from the menu
  • Press 1:Uninstall
The illustration and solution are courtesy of Jesse Phillips, who cites this page from the Texas Instruments support site

- doug garfinkel, Children's Day School

Posted on Jan 29, 2008

rsamboragal
  • 11 Answers

SOURCE: graphing multiply equations

When you go to Y=, you should get a list that says:
Y1=
Y2=
Y3=
etc. You just enter the first equation into the Y1= space then hit ENTER and it will go to Y2=. Enter the second equation there. After you have entered all of your equations, push GRAPH and they should come up in order but they will all appear.

Also, make sure your window is set appropriately so that you are able to see all of the graphs.

Lastly, when you look at your Y= screen, are there funny looking arrows before the Y=? If so, do this:

  • Press [APPS] key
  • Select Transfrm from the menu
  • Press 1:Uninstall


  • Hope one of these are helpful!!

    -Gretchen

    Posted on Mar 22, 2008

    • 4 Answers

    SOURCE: My calculator will only graph one graph at a time.

    This is simple... Back up all RAM, (press second+, then 2, then 1, press enter to back up something if backed up it will have a star by it) Then clear your RAM (pull out your batteries while the calc is still on or press second+, then 7, then 1)
    Hope this helps!

    Posted on Oct 09, 2008

    • 56 Answers

    SOURCE: Graph feature is not working on TI-83

    you have one of your stat plots on that is what is messing it up. So either turn off the stat plots. Or just reset your calculator. hit 2nd then the plus (+) key then 7 then 1 then 2. Good luck

    Posted on Nov 12, 2008

    • 11 Answers

    SOURCE: How do you set up window range?

    or press ZOOM, option 6 (ZStandard).  That instantly resets the window range.

    Posted on Jan 28, 2009

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    1 Answer

    I can not graph a parametric equation useing radians. I am using a TI-nsipre with out any updates since purchase not a CAS or CX one.


    In parametric functions, the variables x and y are both functions of an independent variable, called t, and that usually represents the time. The default variable in parametric functions must be called t. You can enter the limits you want. However if you type in 2 Pi it will be converted on the entry line to 6.28. The default tstep is 0.13 which is about pi/24. I fail to see what the commotion is about.
    In this representation of the witch of Agnesi, the variable t is between 0 and 4Pi, and the step tstep is 0.13, a little less that pi/24
    Reset your calculator and restart


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    How to use ti 84 plus calculator to graph linear equations


    You have to use Y Editor to define functions on the both sides of the equation and then graph it. Finally option is F5: Intersection.
    See captured images for equation 5x+10=-2x-7, y1=5x+10, y2=-2x-7 and x=-17/7












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    Feb 25, 2012 | Texas Instruments TI-89 Calculator

    1 Answer

    Graphing an equation


    Press the Y= key to invoke the Y= editor. Enter in your equation.

    Press the WINDOW key to set the window parameters.

    Press the GRAPH key to have the calculator graph the equation.

    For more details and options, see the "Function Graphing" chapter in the Guidebook.

    Nov 11, 2009 | Office Equipment & Supplies

    1 Answer

    Ti 84 plus problem


    The calculator only displays from -10 to 10 on the x and y axes, and both of your lines are outside of that range. However, it is easy to change that.

    1. Hit the gray "WINDOW" button that is directly under the screen
    2. Change "Xmax" to 150
    3. Change "Ymax" to 200

    Remember to change both of those values back to 10 when you are done with this problem!

    Here's how to graph it:
    1. Hit the "Y=" button
    2. Enter your first equation after Y1, and your second equation after Y2
    3. Look over both the equations to make sure you typed them correctly
    4. Hit the "GRAPH" button
    5. If you don't see the intersection you will need to adjust Xmax and Ymax again
    6. Hit Hit "2ND" and the "TRACE" to bring up the "CALC" menu
    7. Scroll down to "intersect" and hit enter
    8. Hit enter 3 times (You use the first and second curve options when you have more than 2 lines)
    9. It should display the coordinates at the bottom
    10. I got (76, 142.1) for the intersection

    Thanks for asking this question! I used to do this a much harder way, but while I was calculating the answer to your question I hit a wrong button and accidentally found this method!

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

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    How do I enter and graph the equation: 6 - 3/8y = x 2/3x + 1/4y = 4 Thanks!!


    At first you have to slving this equations in explicit form y=f(x) and the graphing it. See captured images



    3_3_2012_5_25_37_pm.jpg

    3_3_2012_5_25_56_pm.jpg

    Jan 23, 2009 | Texas Instruments TI-83 Plus Calculator

    2 Answers

    How do you set up window range?


    or press ZOOM, option 6 (ZStandard).  That instantly resets the window range.

    Jan 20, 2009 | Texas Instruments TI-84 Plus Silver...

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    How to graph linear equation in two variables


    I am not quite sure what you are asking...

    (1) if asking for graphing y= -2/3x+2, then press [diamond] [F1: Y=] type in .2/3x +2, see graph by [diamond][graph]

    (2) if asking for graphing y= -2/3x+a, where a=3x, then first archive a=3x in Home screen by [home], type 3x [sto] a, then go back to y= menu, and type -2/3x+a in Y1

    (3) if asking for graphing an equation that is dependent on 2 variables at the same time, use x-y-z axis (aka, change mode to graphing 3-D by [mode]graph [5:3D]) then enter desired equation in y= menu using Z function in terms of x and y aka z(x,y)= ...)

    May 18, 2008 | Texas Instruments TI-89 Calculator

    2 Answers

    Graphing


    The first solution will allow you to watch your calculator graph two equations simultaneously rather than finishing one before graphing the next; it won't solve the problem of having the calculator unselect one equation when you select a second. To fix that problem, try the following:


    In order to select additional graphs, the Transformation Graphing App will need to be uninstalled from the TI-83 Plus Family and TI-84 Plus Family. Uninstalling the App does not erase it from the calculator, it disables it from interfering with the normal graphing modes. Below are the steps to successfully uninstall the App.
    • Press [APPS] key
    • Select Transfrm from the menu
    • Press 1:Uninstall
    The illustration and solution are courtesy of Jesse Phillips, who cites this page from the Texas Instruments support site

    - doug garfinkel, Children's Day School

    Jan 15, 2008 | Texas Instruments TI-84 Plus Silver...

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