How do you graph y=8cos x on (0,2) on the 48GX...if you show me i can probably figure out the rest...thanks

Re: Learning to Graph in my Trig class..

Hello,

I do not quite get what you mean by on (0,2), but I will show you the basic steps to graph functions of the type y=f(x).

I will illustrate it with the key sequences on my HP48G. **A. Angle UNIT**

- Since you want to draw the trigonometric functions, you must make sure the angle unit is appropriate. (I will use radians)
- Press [Right Shift, cyan key] [MODES], use down arrow key to highlight the Angle measure. If angle unit is the correct one, press the [F:OK] key.
- If it is not, press the [B:Choose] menu item and select the correct angle unit from the list and press [F:OK], and OK again to exit the MODES screen.

- Press the [Right Shift, cyan key][8] to access (PLOT).The function entry screen opens and you can verify that the angle unit is the correct one.
- The function entry line EQ is highlighted.
- If equations are available in working directory you can use the [B:Choose] menu item. If you want, you can [A:Edit] the equation highlighted, or just enter a new one.
- Press [EDIT]. The expression is pasted on the EDIT line, just above the menu bar. Pay attention to the two single quotes, do not erase any of them. If you do you will have to enter again the one erased.
- When you finish editing or entering the expression for the function press [F:OK]
- Make sure that the dummy variable inside the function is identical to the independent variable highlighted on the third line. Usually it is Capital X, but in some library functions the variable is non-capital x. The two must be the same
**.**

- Once the independent variable is chosen, use the right arrow key to set the H-View (horizontal dimension of the window). If you want to edit the left x limit press [A:Edit].
- Accept or edit the window dimensions.
- You may want to check the AUTOSCALE option. Use arrow to highlight the field left of Autoscale, and press [C:CHK] to put a check mark.

To draw the function press [F:Draw] Menu. Wait for the function to be drawn.

Other functionalities are available for the drawn function, but I will not describe them. Remember, you just wanted to get started.

Hope this will help you get started.

Posted on Nov 08, 2009

The calculator OS (the latest version) has 2 angle settings: Graphing angle and geometry angle.

In Graph mode, Press the menu button, then select Settings, set graphing angle to radians.

Here are some screen captures to help you.

Be sure to validate your changes by pressing OK

In Graph mode, Press the menu button, then select Settings, set graphing angle to radians.

Here are some screen captures to help you.

Be sure to validate your changes by pressing OK

Jan 25, 2013 | Texas Instruments TI-Nspire Graphic...

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

Jul 10, 2012 | Texas Instruments TI-84 Plus Silver...

What probably happened is the graph was turned off.
to turn the graph back on, select the function (ex. y1) and then press f4. This should turn the graph back on and you should see the function.

Hope this helps.

Hope this helps.

Apr 20, 2011 | Texas Instruments TI-89 Calculator

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.

Oct 28, 2010 | Texas Instruments TI-84 Plus Silver...

This sounds like a range problem; meanaing that the calculator has probably graphed it but it is not in your window.

Heres a simple solution:

First make sure that the graph has been highlited so that it is being graphed.

Secondly; try the z-fit function on the graph menu as oppesed to Z-standard ot Z-trig. This might make sure that the range "fits" into your window.

Thirdly and this one might make you smarter, this is not the easiest, but the best; Check your function numerically so that you have some idea of the range. Plug some numbers in numerically into the domain, x, to see twhat the output of the y would be. This might tell you if the graph might be growing so fast or slow that it is not showing up in your normal range.

There are also other ways; buyt these should suffice and get you more familiar with your calculator.

Good luck and happy graphing!

Heres a simple solution:

First make sure that the graph has been highlited so that it is being graphed.

Secondly; try the z-fit function on the graph menu as oppesed to Z-standard ot Z-trig. This might make sure that the range "fits" into your window.

Thirdly and this one might make you smarter, this is not the easiest, but the best; Check your function numerically so that you have some idea of the range. Plug some numbers in numerically into the domain, x, to see twhat the output of the y would be. This might tell you if the graph might be growing so fast or slow that it is not showing up in your normal range.

There are also other ways; buyt these should suffice and get you more familiar with your calculator.

Good luck and happy graphing!

Jun 30, 2010 | Texas Instruments TI-83 Plus Calculator

Are you in degrees instead of radians? I get two small bars at either end of the screen when in degrees and a more readable graph when in radians.

Mar 11, 2010 | Texas Instruments TI-84 Plus Calculator

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.

Mar 05, 2010 | Texas Instruments Calculators

Go to the graph app (diamond + f3)

to the graph apps settings (f1 , then 9: Format)

turn off discontinuity detection

go to the window setupt (diamond + f2)

change xres to 2.0

to the graph apps settings (f1 , then 9: Format)

turn off discontinuity detection

go to the window setupt (diamond + f2)

change xres to 2.0

Jul 16, 2008 | Texas Instruments TI-89 Calculator

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.

Dec 31, 2007 | Texas Instruments TI-84 Plus Silver...

While the graph function menu is on the display press the F3 button to display the graph you want to do. Then press the function key that corresponds to the graph that you want.
If you have the manual it explains it on page 117. Kind of hard to explain it here when you can't type the buttons. LOL

Jun 07, 2007 | Casio FX-9750GPlus Calculator

Jun 01, 2014 | HP 48gx Calculator

Jun 01, 2014 | HP 48gx Calculator

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