Question about Texas Instruments TI-84 Plus Calculator

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My TI--84 plus calculator won't display the 7 graph modes, and it won't graph equations simultaneously. What is wrong? I can only get an arrow icon and an arrow-bar icon.

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Hello,
Use the [Y=] entry screen to enter the functions you want to graph. Make sure that the = sign after Y1, Y2 etc. is highlighted (black). If the = sign is not highlighted the corresponding function will not be drawn. You can can up to 10 functions, but what is the point of drawing so many if they overlap?
Anyway, to change the graph style of the curve for a particular function, use arrows to move to the line, then use left arrow to the bit of line that appears to the left of the Y. Highlight the segment an press ENTER. Each time you press ENTER the style changes to another one. Beware of the unconnected bubble style. During the drawing it will show the position of the point being drawn, but at the end, the whole curve, so to speak, evaporates.
As to simultaneous graphs, if it is important to you to have the graphs drawn for all the curves at the same time, you can enforce that by pressing [MODE], and using down arrow to reach the 6th line Sequential Simul. Use the right arrow to highlight Simul and press ENTER.
Whether drawn sequentially or simultaneously, all graphs will be displayed, except for the ones with the unconnected bubble as style.

Hope it helps.

Posted on Oct 02, 2009

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1 Answer

My TI-84 Plus won't let me graph trigonometric functions.


Is it somehow preventing you from graphing, or are you simply not getting the graph you expect?

Most likely you have the angular mode set wrong. You probably want it set to radians. Press MODE, move to the third line, highlight RADIAN, press ENTER, then 2ND [QUIT].

If it's not the angular mode, please reply to this post and give an example or two.

Mar 22, 2013 | Texas Instruments TI-84 Plus Calculator

1 Answer

Cannot graph two equations together, & trig graphs are not correct.


At first in Y editor type Y1=2*cosx and for example y2=[5*exp(-x)]-5 and then graphing it. Set RAD mode of course. See captured images
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Jul 10, 2012 | Texas Instruments TI-84 Plus Silver...

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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

I used to have the normal Ti-84 Plus, but my sister has it now, and I bought the Ti-84 Plus Silver Edition, but it has a completely different system. For instance it doesn't write the equation on a few...


If you don't have version 2.53MP of the operating system on the TI-84 Plus Silver Edition, you can download it from
http://education.ti.com/educationportal/sites/US/productDetail/us_os_84plus.html

You can check the version of the operating system by pressing 2ND [MEM] 1. The OS version number is on the second line.

Once you're running OS 2.53MP, press MODE to enter the mode editor. Press down-arrow repeatedly to get to the second page. On the top line, highlight MATHPRINT. Press ENTER to select it, then press 2ND [QUIT] to exit the mode editor.

Dec 26, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

I have a student in my Precalculus class who is trying to graph several equations simultaneously, and her calculator will only display the graph of one equation at a time. In the equation editor, the...


Some time or other she played with the Transfrm Application. It remains in memory and takes over the graphing capabilities of the native OS. It must be kicked out of memory.

  1. Press [APPS]
  2. Use Up or Down arrows (Up is faster) to get to the bottom of the APPS list.
  3. Locate [:Transfrm], highlight it and press [ENTER]
  4. In subsequent screen, select the [UNINSTALL] option.
  5. Go back to the [Y=] screen and enter or edit your functions.
  6. Press [GRAPH] when finished entering the functions.

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

1 Answer

How do i get rid of the shade when i press graph on my ti 84 plus graphing calculator


Press the Y= key. Move to the equation in question, then press left-arrow repeatedly until the cursor is at the far end of the line. Press ENTER repeatedly to cycle through the different graph styles. The default is the four dots in a diagonal line from upper-left to lower-right.

Sep 15, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

I can not graph simultaneous equations. Mode is set to functions and simutaneous. Megaphone(?) is to the left of y= instead of \ (or /). I can do this on other TI 84s but not my own!!


Hi,
What you call a megaphone is a bit of graph style that the calculator can use to display graphs. There are 7 styles. To select a style, open the Y= editor. On the same line where you typed in an equation, use the left arrow to move the cursor on the graph style piece. Highlight and press ENTER. Each time you press ENTER, the style changes, so you can cycle through all the available ones. Be careful with the bubble style, it will not leave a graph. It will evaporate.

Whether you draw the graphs simultaneously or sequentially amounts to the same thing at the end. Both graphs will be present on the same sceen (except the bubble).

What you should make sure of is that the equal signs of both functions (Y1=, and Y2=) remain highlighted as cursor moves to another location. Usually, an equal sign becomes highlighted as soon as you start enbtering the relevant function. If you cannot keep both highlighted, I suggest you reset the calculator RAM.

To reset Ram
Press [2nd][MEM][7:Reset][1:All Ram][2:Reset][ENTER] . Press [CLEAR] to clear the "Ram Cleared" message.

If for some reason you do not want to clear the Ram, you must turn statplots of.
To turn StatPlots Off

Press [2nd] [Y=] (STATPLOT). Select [4:PoltsOff][ENTER][ENTER].

That should work.

Hope it helps.
Don't forget to rate the solution and don't be stingy: 4 thumbs up won't leave you any the poorer.

Nov 25, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

I can't graph more than one equation in the y= area of my Ti 84+


Hello,
The marking that so puzzle you define the type of line (or dots) to represent the graphs. Enter as many functions as there are Y variables.
After entering a function press [ENTER] to jump to the next one.
When finished entering all functions press GRAPH. If you want graphs drawn one after the other, in MODE highlight Sequential (6th line) and press ENTER. If you want graphs drawn simultaneously, in MODE (6th line) highlight Simul and press ENTER. Press 2ND QUIT to return to previous screen . Execute graph again.
Hope itr helps.

Sep 23, 2009 | Texas Instruments TI-83 Plus Silver...

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

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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