Question about Texas Instruments TI-84 Plus Calculator

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

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  • Anonymous May 18, 2019

    Dont forget X inside sin, for example if the function was 1.5sin(3/2t) where t is time you might forget to replace t with X when graphing the function.

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I have tried all these steps and my calculator still displays a straight line?

Posted on Feb 28, 2019

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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.

Posted on Mar 22, 2013

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Posted on Jan 02, 2017

Sada786

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SOURCE: I used a "hook" program and connected the calculator to a motion detector. The graphing function was working fine before I used that program.

Press the 2nd button, then the plus button, the 7, then 1, then 2. This will reset your calculator.

Posted on Aug 06, 2009

Anonymous

  • 1 Answer

SOURCE: graphing trig functions

Put the calculator in radian mode and it will graph trig functions just fine. If you don't know how to change it to radians, then go to mode and cursor over to select radians. I am assuming you know where the sine, cosine, tangent, etc. keys are.

Posted on Jan 04, 2008

Sada786

  • 88 Answers

SOURCE: I can't graph on my ti-84 plus silv. edition

More than likely, you've put in a number in the xmin or xmax that is not correct. Example....you put in an xmin of 10 and an xmax of -10 which would be backwards. This could also happen in the ymin or y max.

The easiest way to fix this is to press zoom 6 which wil get you back to the default graph of xmin of -10, xmax of 10 and ymin of -10 and y max of 10.

If you can't see your graph on this screen and need to change the window, just be sure the number in the min for both x & y is smaller than the number in the max. You change your window size by pressing the window button.

Posted on Aug 15, 2009

k24674

  • 8081 Answers

SOURCE: TI-84 Plus LCD display broken. Is replacement available?

Hello,
Contact ti-cares@ti.com or www.ti.com/calc .
Hope it helps

Posted on Oct 25, 2009

k24674

  • 8081 Answers

SOURCE: My TI-84 Plus won't graph two functions at once.

Hello,
Turn the satistical plots OFF
Press [2nd][Y=] (STATPLOT). Select or enter 4: to execute the command [PlotsOff] [ENTER]

Clear the lists (statistical lists)
Press [2nd][0] (Catalog]. Press [PGRM] C. The cursor jumps to the first command in catalog that starts with C (The greek letters in names do not matter). Scroll down a bit to reach the command [ClrAllLists]. Select it and press [ENTER].

Try your graphs again.
If you still have problems, just reset the RAM:
Press [2nd][+] (MEM). Press 7 to select [Reset] then [1:All Ram][2:Reset]. Press [Clear] to erase the Ram Cleard message.

Now you should be able to draw the graphs.

Hope it helps.
Thanks for using FixYa.

Posted on Nov 19, 2009

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Apr 05, 2012 | Texas Instruments TI-84 Plus Calculator

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I can not find the arc key or the INV key


The INV key that you may find on some scientific calculators has, on the TI 83/84/ Plus calculators, an equivalent key marked [2nd].

On the TI83/84 Plus, each trigonometric function has a second marking [SIN^-1], [COS^-1] or [TAN^-1]. To calculate the inverses of trigonometric functions ( arc sine, arc cosine, arc tangent) you press [2nd] followed by the relevant trigonometric function key For example, [2nd] [SIN] displays sin^-1( on the command line.

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Feb 27, 2012 | Texas Instruments TI-84 Plus Calculator

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How can I graph sine and cosine waves on my TI-84 Plus? I can see the Theta symbol on the "X,T, "Theta",n" button. But whenever I try to graph a function, it doesn't work. Please...


When you graph functions y=f(x), even if f(x) is a trigonometric function, the default independent variable is x. You will have to use the variable theta only when drawing polar functions.
To draw the sine and cosine or any other trigonometric function set the angle unit to radians and window zoom to standard. If your angle unit is degree you must modify the x-window range to, say, multiples of 180 degrees. Other than that there is nothing special to do. The functions are well-behaved and should graph nicely. You will alos get a better view if Ymin is about -1.2 and Ymax is about 1.2

May 22, 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

1 Answer

Theres no lines on the graph, i put in inverse of sine 1/2 and it didnt graph


Change your mode (using the Mode button) from degrees to radians. You may also want to consider changing your window settings as you become more familiar with trigonometric functions.

Mar 06, 2011 | Texas Instruments TI-84 Plus Calculator

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I can't select more than one function to graph It only will let me select one function


In order to select additional graphs, the Transformation Graphing Application will need to be uninstalled from the TI-83 Plus Family and TI-84 Plus Family.

More information regarding this matter can be found in the Knowledge Base. The Knowledge Base can be accessed by clicking on the URL below:

http://epsstore.ti.com/OA_HTML/csksxvm.jsp?nSetId=65121&nUsePub=NO&jttst0=6_23871,23871,-1,0,&jtfm0=&etfm1=&jfn=ZG14E1108A3A0CD3ABADCD67260B59BDE0CEEA20790F80F708D8A4FDACCD82D31F792BC1B01D2F67ECAE6718104B82CC1C8F

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Put the calculator in radian mode and it will graph trig functions just fine. If you don't know how to change it to radians, then go to mode and cursor over to select radians. I am assuming you know where the sine, cosine, tangent, etc. keys are.

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