Question about Texas Instruments TI-82 Calculator

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TI-82 graphing problem

Hello, I can't see the x-axis or the y-axis when graphing a function. I followed the basic instructions for drawing a circle (found in the user manual) to help reset graphing options, but they still don't appear. Could you please help. THX, --Mona.

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I have to disagree with AndyPlough you go to window-right arrow-and go to AxesOn and press enter.

Posted on Nov 23, 2008

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Try looking at you Window settings they should look like this
Xmin=-10
Xmax=10
Xsc1=1
Ymin=-10
Ymax=10
Ysc1=1
Xres=1

Posted on Jan 17, 2008

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4x+y>=4

Posted on Nov 23, 2007

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You must press 2nd then "zoom", then go down to axes, and turn them on. Now your graph will work again.

Posted on Aug 27, 2007

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1 Answer

To graph a circle with radius 4


Press [2nd][PGRM] to open the (DRAW) utility. Scroll down to reach the line 9: Circle( and press ENTER. Complete the command by supplying the coordinates of the circle center and the radius.
Circle(0,0,4) draws a circle with center at the origin (0,0) and radius 4.
By the way the equation of a circle is not a function. You have to cut it into the upper brach and the lower part to graph it.
y=+SQRT(16-x^2) and y=-SQRT(16-x^2)

Sep 01, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

When I try to graph something, I see the graph, but I no longer see the x and y axis. This happened on my TI-89 titanium


Enter a function in Y= Editor, then draw its graph.

k24674_122.jpg

While the graph is still displayed Press F1

k24674_123.jpg

Press 9:Format to open the FORMAT screen
k24674_124.jpg

Toggle the Axes ON

Aug 26, 2011 | Texas Instruments TI-89 Calculator

1 Answer

My fx-9750GA PLUS wont graph lines, cicles or paraballas


Sure it does! Did you ask it to graph?Here are some screen captures to help you find your way.
To draw functions (regular, parametric, polar, sequences) use the application graph: Highloghted on 1st screen capture. The second screen captures shows you the functions y=f(x). enter a legal expression and press F6 Draw. To set TYPE press the key under TYPE.

k24674_100.jpgk24674_101.jpg

To draw conics (circles, parabolas, hyperbolas, and ellipses) use the CONiCS applications. (See 3rd screen ). On 4th capture the equation highlight is one for the parabola. y=x^2

k24674_102.jpgk24674_103.jpg

Scroll down or up examining the small graphs. They will show you which equation form to choose.
For the circles
k24674_104.jpg

Jun 19, 2011 | Casio FX-9750GPlus Calculator

1 Answer

How to use graphing calculator?


The casio FX-300Ms calculator cannot do graphs. To tell you how to use a graphing calculator TO DRAW GRAPHS we need to know the exact brand and model number of the calculator.

  1. Most graphing calculators basically function the same way.
  2. You select the graph type (function, polar,parametric, sequence, 3D, wire mesh, slope field, etc.)
  3. You enter the algebraic form of the function you want to draw.
  4. You press a button or menu to GRAPH
  5. The graph is drawn.
  6. If you want to see a particular part of the graph, you use a ZOOM function, or you enter values for the WINDOW dimensions.
  7. Most graphing calculators have a TRACE function that allow you to follow the curve you have drawn to read off values of coordinate points.
  8. You can also use the calculator to find zeros roots) of functions, calculate derivatives at some chosen points or calculate the area "under the curve", find the minimum and maximum of a function.
In addition to its graphing capabilities, a graphing calculator can be used as a scientific calculator. Sometimes it can also do statistical and financial calculations, matrices, list manipulations, operations on complex numbers, text editing,, creating programs etc.



Aug 13, 2010 | Casio FX-300MS Calculator

1 Answer

I tried to draw a graph manually but I kept getting an error message even thoug I did it step by step like the users guide instructions said


Error messages are important to help solve the problem.
Try the following instructions to draw the function Y=5X+2
but first Reset the calculator by pressing the RESET button on back of calculator. I do not want you to run into problems created by old settings.
  1. Turn calculator ON. If you do not see several icons press [MENU].
  2. Use arrow to select the [GRAPH] application and press [EXE].
  3. In the entry screen, the line with Y1= is highlighted. If it is not, use arrow to highlight it.
  4. Press the right arrow, the highlighting disappears leaving you with Y1= and the blinking cursor.
  5. At the position of the cursor type 5 then press the [X, theta,T] key, under the [ALPHA]. On the screen appears 5X, complete your equation by typing [+] 2
  6. Press [EXE] to store function.
  7. If you want to draw other functions, it is time to do so on that screen.
  8. When done, press [F6:Draw].
  9. If the screen does not show a lot of the function, you can use the arrow keys to pan (move the center of the graph. You can pan Up, Down, Left, or Right.
  10. You can also press [SHIFT][V-Window] to set the window limits.

Feb 17, 2010 | Casio FX-9750GPlus Calculator

1 Answer

Admission to a professional course is subject to the following condition: a) Marks in mathematics > = 60 b) Marks in Physics > = 50 c) Marks in Chemistry > = 40 d) Total in all three subjects >...


So:

X >= 60
Y >= 50
Z >= 40

Take 51 sheets of "graph-paper" (1+200 minus 60 minus 50 minus 40).

On the first sheet of paper, label the graph-title as 'Z=40'.
Label the X-axis from 60 to 200.
Label the Y-axis from 50 to 200.
Draw a straight line from (X=60 and Y=(200-60-40))
to (Y=50 and X=(200-50-40)).

On the second sheet of paper, label the graph-title as 'Z=41'.
Label the X-axis from 60 to 200.
Label the Y-axis from 50 to 200.
Draw a straight line from (X=60 and Y=(200-60-41))
to (Y=50 and X=(200-50-41)).

On the next sheet of paper, label the graph-title as 'Z=42'.
Label the X-axis from 60 to 200.
Label the Y-axis from 50 to 200.
Draw a straight line from (X=60 and Y=(200-60-42))
to (Y=50 and X=(200-50-42)).

On the second sheet of paper, label the graph-title as 'Z=43'.
Label the X-axis from 60 to 200.
Label the Y-axis from 50 to 200.
Draw a straight line from (X=60 and Y=(200-60-43))
to (Y=50 and X=(200-50-43).

Keep going for all 51 sheets of graph-paper.

Stack the 51 sheets on top of each other,
to visualize the "3-D" solution to the problem.

P.S. Don't tell your school-teacher that I helped you do your "homework".

Nov 04, 2009 | Microsoft Computers & Internet

3 Answers

How to set the window?


Hello,
Press [Window]
Set the values of Xmin, Xmax, Ymin, Ymax.
If the x values that the function takes are all positive, you may set Xmin =0. If the values of the function are all positive, you can set Ymin=0.
If you are drawing a sine or a cosine function, you know that the function values are between -1 and +1, so you cant restict Ymin an Ymax to say -1.2 and 1.2. Similarly if you draw trigonometric function no need to have a range of X values between -10 and 10: the function being periodic you can restrict values (in radians to -pi to +pi, ) or to -90 to +90 degrees.
You set the limits of the window by making use of your knowledge of the functions you are drawing.

Hope it helps.

Sep 19, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

How can I get my calculator to highlight more than one function, to graph a circle for example?


Hello,

Suppose you want to draw the circle the equation of which is X^2+Y^2=4, a circle centered at the origin with radius 2.
When you isolate Y^2 and then extarct the squre root you obtain two solutions, call them Y1 and Y2
Y1=SQRT(4-X^2), Y2= -SQRT(4-X^2)
You press[Y=] and type in the right hand side of the equations above, one in Y1= and the other in Y2. Press [GRAPH].

Ih a graphic does not appear within the scree window adjust the window parameters ( [WINDOW]) or Press [ZOOM] and select ZoomIn, ZoomOut, ZoomSTD, etc.

Explore the program Draw accessible by pressing [2nd][DRAW].

Hope it helps

Sep 04, 2009 | Texas Instruments TI-84 Plus Calculator

3 Answers

I'm an older student.....in my 50's. I am taking classes to complete my bachelor's degree in nursing, something I should have done 30 years ago. Better late than never, right? Anyway, I found my son's TI...


Hi Anne,
here are some tips to use your TI 83 calculator. Patiently follows this:

  1. Press ENTER to find out the answer to an expression.
  2. Press 2ND before pressing a button to use the function in yellow above the button.
  3. Press ALPHA to enter in letters.
  4. Press 2ND before pressing Alpha to turn on Alpha lock, which will automatically use the alpha mode until you press a directional key or ALPHA again.
  5. Press 2ND and then hold up or down to adjust the screen contrast accordingly.
Advanced Instructions
  1. Press MODE to go to a menu that allows to change graphing modes, degree modes, and notation modes among other things.
  2. Enter in a number then press STO> then enter in a letter and hit enter to store values in variables.
  3. Press Y= and enter in a function and then press GRAPH to view it. If you are having trouble viewing it, press WINDOW and adjust the graph's window.
Thanks,

Cherile

Aug 30, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Graphing circles


You have two methods for drawing a circle on the FX-9750GPlus.
  1. Use the Conics graphing: The general equation of a circle is aX^2 + aY^2 + bX+cY+d=0
  2. Use the function graphing. But before you can do that you must transform the general equation (above) in such a way that you can write it as Y^2= X^2+EX+F. From this you can find the two branches Y1=SQRT(X^2+EX+F) and Y2=-SQRT(X^2+EX+F)

Oct 09, 2007 | Casio FX-9750GPlus Calculator

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