Question about Texas Instruments TI-86 Calculator

1 Answer

When I turn on my Ti-86, there are two lines across the screen

The lines are about 1/3 the way from the top. The calculator will not function except it will turn off and on.

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  • Anonymous Jan 22, 2009

    I have the same exact problem. Two lines appear on my screen and my calculator will turn on and off but that is it.

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1 Answer

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  • Texas Instru... Master
  • 7,993 Answers

Hello,
Try to reset the RAM. [2nd] MEM and select Reset.
Hope it helps.

Posted on Sep 23, 2009

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1 Answer

When graphing the function (x+6)/(x-7) I'm getting a vertical line showing up on the graph connecting the two curves that shouldn't be there. do I have something turned on that shouldn't be?


The vertical line is called an asymptote, it is not connecting the graph, it means that the function goes to infinity as the function nears the line. In this case the graph goes to infinity and negative infinity as the x nears 7. This is because the function becomes undefined at x = 7 , plug 7 into x and we get 1/0, dividing by zero is undefined. Thus, the calculator puts the vertical asymptote in the graph to symbolize the action of the function nearing infinity.

Apr 02, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

Need help plugging 1+4700e^-4 into the calculator, I really would appreciate help! I cant seem to get the correct combination!


1 + 4 7 0 0 * (-) 4 2nd [e^x] =

(-) is the key to the right of the decimal point key.
e^x is the shifted function of the LN key on the top line.

Mar 24, 2011 | Texas Instruments TI-30XA Calculator

1 Answer

Invalid dim message? Trying to plot a histogram. All plots except Plot 1 are turned off. Cannot seem to figure out what is wrong.


You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

Jan 27, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

How can I reset my calculator back to default? It used to say 12000 now it says 12k, and inseadt of showing 1/2 F->D it says 500m? HELP!!!!


moz-screenshot.pngTurn Calculator ON
  1. If you see no icons, press the Menu key.
  2. Use navigation keys (arrows) to highlight [Run] or [Run/Mat]
  3. The screen is cleared except for a possible [MAT] TAB at the bottom of screen (it depends on OS installed).
  4. In RUN screen press [SHIFT][MENU] to enter (SETUP)
  5. Use the down arrow to scroll down till you reach the line Display.
  6. If the display line looks as on the screen capture that means you have activated the ENGINEERING display mode (notice the /E after Norm1 or Norm2.
  7. To deactivate the ENG mode press the F4 function key below Eng.
  8. The /E option should disappear from the Display line.
f0c6a57.jpg

Oct 30, 2010 | Casio FX-9860G Graphic Calculator

1 Answer

How do I get the calculator to graph an equation like y=-3x-1


Press Y= (the first function key on the top row). On the line beginning Y1=, put in the right hand side of the equation: 3 ALPHA [X] - 1

Press GRAPH (the last function key on the top row) and you'll see the graph. If you want to look at different parts of the graph, press WINDOW and change the window settings.

Sep 24, 2010 | Texas Instruments TI84Plus Graphic...

1 Answer

How do i enter sec^-1(1.85)


You cannot enter it on the calculator but you can use the relation arcsec(z) =arccos(1/z)
On your calculator arccos is represented as cos^-1.
Here is a screen capture from a calculator that has the function. The arcos is computed along with the arcsec for angles in radians (top 2 lines) and in degrees (bottom two lines).

e16df84.jpg

Sep 09, 2010 | Texas Instruments TI-84 Plus Silver...

1 Answer

My TI 86 is 6 years old and I have taken careof it well.


Try pressing (lightly) on the bottom border below the screen. If there is no change, try the top. If there is still no change, the power for your LCD may have become disconnected or shorted. There are external displays for these calculators intended for overhead projectors. If your school has one, you could try hooking it up to make sure the calculator itself still works.

In either case, it would be better to purchase a new calculator.

Good Luck!

Feb 05, 2010 | Texas Instruments TI-86 Calculator

1 Answer

How do you put casio fx-300MS in degrees mode? please help


Hi,
To change the default angle unit, you press the [MODE] button a certain number of times until display shows a rectangle inside which Deg Rad Grad appear on the top line and 1 2 3 on bottom line, with 1 under Deg, 2 under Rad, and 3 under Grad.
Press the number key corresponding to your case, 1. All angle values you feed the trigonometric functions will be considered to be in degrees. If you use the inverse trigonometric functions to find angles, the results will be in degrees.

Hope it helps.
Thank you for using FixYa and do not forget to rate this free solution.

Nov 04, 2009 | Casio FX-300MS Calculator

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