Question about Texas Instruments TI-84 Plus Calculator

2 Answers

Entering inequalities into TI-84 to graph

I have a homework question that say use a graphing utility, graph the function for 0
Thank you for your time.
Confused

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2 Answers

Then push the graph button finally.

Posted on Feb 28, 2008

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I think you should get a Texas Instruments calculator and push the 'y=' button then put the equation like '2x+4' in the y1 area. You can put the X by using the variable botton. I hope my english makes sense I am not a native speaker.

Posted on Feb 28, 2008

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2 Answers

How do i use the "shades" or "Po-I-Trace" menus on the TI-84?


Press APPS. Scroll up or down to reach Inequalz and press ENTER. The inequalz application will know control function graphing. Open the Y= editor to enter at least two inequalities . Use the tabs at the bottom to type in the relational operators. You will have to press [ALPHA] followed by [F1], or [F2], etc

7_30_2011_12_32_29_pm.jpg
Press the GRAPH function key (F5) to draw the graphs. You get the two regions superposed (original shading).

7_30_2011_12_35_32_pm.jpg
Press [ALPHA][F1 or F2] to activate the [SHADES] tab. This open up the following screen.

7_30_2011_12_38_54_pm.jpg
On this screen you can choose the type of shading 1: Intersection of the two regions ( the part of the plane that satisfies both inequalities, 2 the union of the two regions or 3 the original shading (as compared to choice 2). Selecting option 1:intersection gives you the following screen.

7_30_2011_12_49_11_pm.jpg
If you press the [ALPHA][F5] keys you have the HELP ? screen below.

7_30_2011_12_50_23_pm.jpg
If you press the [ALPHA] [F3] keys you get a Point of Interest (You should consult the manual for the Inequalz application for more details.
7_30_2011_12_52_14_pm.jpg
By pressing the TRACE button (not ALPHA F4) and the left or right arrows you you can follow the graph of one of the functions. You jump to the other functions by pressing the Up or Down arrows.

7_30_2011_12_57_36_pm.jpg
To get the manual for Inequalz go to the education.ti.com and download it.

Jul 29, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I want to graph an inequality but when i got to apps all it shows up is only finance


You don't need an app. Just press the Y= button and enter the inequality as if you're entering another function to be graphed. Then press left-arrow repeatedly to move to the diagonal line at the left end of the display. Press ENTER repeatedly to cycle through the different graph styles. If the inequality is of the form "y less than" or "y less than or equal to", select the shaded triangle below the line. If the inequality is of the form "y greater than" or "y greater than or equal to", select the shaded triangle above the line.

Jun 10, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I have a TI-84 Plus and it will not graph two functions at once and I need it to do this for my Calculus homework.


I've had this problem as well. The calculator has a program running on it that will not allow 2 (or more) functions to graph at once. To solve this:

1. Hit the "APPS" button.
2. Scroll down the list (close to the bottom) and find the application called "Transfrm". Press enter.
3. Highlight "Uninstall" and press enter.

Your calculator should now be able to graph as many functions as you would like!
Hope this helps!

Apr 27, 2011 | Texas Instruments TI-84 Plus Calculator

2 Answers

How to use texas instruments ti-84 plus to plot inequality 4x+8y<40?


First step is to find inequality in the form y<f(x), in this case y<5-0.5x. Then graphing it. See captured image


3_3_2012_6_59_43_pm.jpg

Feb 18, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

In front of the y= , there is a >II . How can


It seems that you are drawing Inequality Graphs.

A. If you are not drawing inequalities, kick the Ineqal application out of memory.

B. If you still want inequality drawing, but just for once want a function graph,
  1. you can open the Y= editor. The operation sign (=, less than, less than or equal to,...) will be highlighted in your equation (inequality).
  2. Press the [ALPHA] key then press the [Y=] key to select the tab corresponding to the = sign.

C. To kick The INEQUAL application from memory,
  • Press the [APPS] button.
  • In the the new screen display (INEQUAL RUNNING), select [2:Quit Inequal]
  • Return to the [Y=] editor screen to make sure that you have function graphs

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

1 Answer

Only graph one function at a time


A) Before drawing function Y1=f(X), R1=F(Theta), (X1=f(T), Y1=f(T))
you should turn the statistical plots OFF.
To turn statistical plots off
  1. Press [2nd][Y=] to open the (STAT PLOT) menu.
  2. Select [4:PlotsOff] and
  3. Press [ENTER].
  4. Calculator displays Done
  5. Restart your graphs.
  6. Adjust the window dimensions if necessary or use the ZOOM function to have all graphs displayed.
B) If you cannot draw more than one function

Usually as soon as you start entering an expression in the Y= editor screen, the = sign is highlighted to ensure the drawing of a function. However, if you have previously used the Transfm application to draw dynamic graphs, it takes over the graphing functionalities from the native OS and you can only draw a single graph.
The reason is that dynamic graphing needs one or two parameters that can be changed during the graphing process and the graph redrawn with a new value of a parameter, and you end up with a family of curves differing one from the other by the values of one parameters. But since the calculator has space for 10 graphs at most, only one function can be highlighted.

To make a long story short, you must uninstall the Transfrm application from memory. The procedure will not erase it, just kick it out of memory.
  1. Press the [Apps] key.
  2. Scroll down or up to reach the Transfmapplication.
  3. Select it and press [ENTER].
  4. If that application was running you will see a new screen that tells you some thing like
    • Transfrm App
    • 1:Uninstall
    • 2:Continue

    Press1:Uninstall.
    Graphing functionalities will revert to the native OS

Another potential culprit is the Inequalz App. You recognize that Inequalz is runnibg if the [ Y=] editor screen shows tabs at the bottom
666ade0.jpg

To uninstall it, do as for the Transfm and select the option that will unload it from memory.
  1. Press [Apps]
  2. Select [ : Inequalz]
  3. Screen displays Inequal RUNNING
  • [1:Continue]
  • [2:Quit Inequal]
  • 3:About]
Press [2:Quit Inequal]

Mar 18, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

The calculator doesnt graph two equation on the graph


A) Before drawing function Y1=f(X), R1=F(Theta), (X1=f(T), Y1=f(T))
you should turn the statistical plots OFF.
To turn statistical plots off
  1. Press [2nd][Y=] to open the (STAT PLOT) menu.
  2. Select [4:PlotsOff] and
  3. Press [ENTER].
  4. Calculator displays Done
  5. Restart your graphs.
  6. Adjust the window dimensions if necessary or use the ZOOM function to have all graphs displayed.
B) If you cannot draw more than one function

Usually as soon as you start entering an expression in the Y= editor screen, the = sign is highlighted to ensure the drawing of a function. However, if you have previously used the Transfm application to draw dynamic graphs, it takes over the graphing functionalities from the native OS and you can only draw a single graph.
The reason is that dynamic graphing needs one or two parameters that can be changed during the graphing process and the graph redrawn with a new value of a parameter, and you end up with a family of curves differing one from the other by the values of one parameters. But since the calculator has space for 10 graphs at most, only one function can be highlighted.

To make a long story short, you must Uninstall the Transfrm application from memory. The procedure will not erase it, just kick it out of memory.
  1. Press the [Apps] key.
  2. Scroll down or up to reach the Transfmapplication.
  3. Select it and press [ENTER].
  4. If that application was running you will see a new screen that tells you some thing like
    • Transfrm App
    • 1:Uninstall
    • 2:Continue

    Press1:Uninstall.
    Graphing functionalities will revert to the native OS

Another potential culprit is the Inequalz App. You recognize that Inequalz is runnibg if the [ Y=] editor screen shows tabs at the bottom
666ade0.jpg

To uninstall it, do as for the Transfm and select the option that will unload it from memory.
  1. Press [Apps]
  2. Select [ : Inequalz]
  3. Screen displays INEQUAL RUNNING
  • [1:Continue]
  • [2:Quit Inequal]
  • 3:About]
Press [2:Quit Inequal]

Mar 17, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

I cant graph more than one equation at a time, it only allows me to graph one Y value at a time.


A) Before drawing function Y1=f(X), R1=F(Theta), (X1=f(T0, Y1=f(T))
you should turn the statistical plots OFF.
To turn statistical plots off
  1. Press [2nd][Y=] to open the (STAT PLOT) menu.
  2. Select [4:PlotsOff] and
  3. Press [ENTER].
  4. Calculator displays Done
  5. Restart your graphs.
  6. Adjust the window dimensions if necessary or use the ZOOM function to have all graphs displayed.

B) If you cannot draw more than one function

Usually as soon as you start entering an expression in the Y= editor screen, the = sign is highlighted to ensure the drawing of a function. However, if you have previously used the Transfm application to draw dynamic graphs, it takes over the graphing functionalities from the native OS and you can only draw a single graph.
The reason is that dynamic graphing needs one or two parameters that can be changed during the graphing process and the graph redrawn with a new value of a parameter, and you end up with a family of curves differing one from the other by the values of one parameters. But since the calculator has space for 10 graphs at most, only one function can be highlighted.

To make a long story short, you must Uninstall the Transfrm application from memory. The procedure will not erase it, just kick it out of memory.

  1. Press the [Apps] key.
  2. Scroll down or up to reach the Transfmapplication.
  3. Select it and press [ENTER].
  4. If that application was running you will see a new screen that tells you some thing like
    • Transfrm App
    • 1:Uninstall
    • 2:Continue

    Press1:Uninstall.
    Graphing functionalities will revert to the native OS

Another potential culprit is the Inequalz App. You recognoze that Inequalz is runnibg if the [ Y=] editor screen shows tabs at the bottom
666ade0.jpg

To uninstall it, do as for the Transfm and select the option that will unload it from memory.
  1. Press [Apps]
  2. Select [ : Inequalz]
  3. Screen displays INEQUAL RUNNING
  • [1:Continue]
  • [2:Quit Inequal]
  • 3:About]
Press [2:Quit Inequal]

Feb 17, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

Changing Y= to Y greater than


Do you want to change from graphing functions to inequalities or the opposite? A complete sentence would help.
I am going to assume that you want to graph y=f(x) functions, but when you opened the Y= editor, you found unusual symbols.
If the is the case, then you must have run the Inequalz Application. It stays in memory and takes over the graphing from the native OS. Inequalz must be unloaded from memory to return control to the native OS.
Here is how to do it.

  1. Press the [APPS] key.
  2. In the list of Apps find Inequalz.
  3. Type the number in the list that corresponds to Inequalz and
  4. press ENTER
  5. The new screen displays INEQUAL RUNNING and 3 choices
  • 1:Continue
  • 2:Quit Inequal
  • About
Press 2:Quit Inequal to unloade the App from memory. Control will revert to the native OS, and you will be able to draw Y= graphs.

Jan 22, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

How would you enter the following equation to graph on a TI-84 Plus Silver Edition calculator? 2 <= t <= 9


Hello,
To enter the inequation you split it into two inequalities
9919eed.jpg
Graph is as follows
45078e2.jpg
Use [2nd][CATALOG] to access the relaional operators less than or equal, greater than or equal, and the operator AND.
To access the inequality signs scroll upwards from abs( to reach the bottom of the catalog.
Note: You can use t as variable only in parametric graphs. Use x.
Hope it helps.

Oct 19, 2009 | Texas Instruments TI-84 Plus Silver...

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