Question about Texas Instruments TI-84 Plus Calculator

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How do you center a graph?

I don't want to go into window each time and change the settings. Is there an easier way where the intersection is pretty much centered on the screen?

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Yea there are some really easy ways
Hit the zoom button (right next to the window button) and hit ZBox. It will take you back to your graph. Now you hit enter somewhere close to your point you want to zoom in on. now move the cursor with the arrow keys and create a box. What ever you put in the box it will zoom in on and then hit enter. Or you can go and hit zoom in. It will take you back to the graph move your cursor to where you want to zoom in on and hit enter

Posted on Jan 09, 2008

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Posted on Jan 02, 2017

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Err: bound


You may be making a confusion between intercepts and intersections. Intercepts are crossing of the axes. Intersections are between two curves: You need to have two curves graphed. You choose the first curve by selecting it (Up or Down Key), and then the second one.

Oct 29, 2017 | Texas Instruments TI-84 Plus Calculator

1 Answer

Help with Ti Inspire Cx calculator. It rounds up the coordinates when graphing


Draw the graphs of the functions you are interested in. While the graphs are displayed Press the Menu key. In the drop down window locate the sub menu Settings (number 8 or 9) depending on your calculator
The following screen is displayed with at the top the setting Float.

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6bb5d17f-69df-4ff9-9780-ed0a7be1d0aa.jpg
Follow the right pointing arrow on the same line as float and select Float 3 or 4 as on the screen capture that follows
ce766af9-0700-4826-b12a-0c98a9589a60.jpg

Point to the graph of one of the functions select it then press the menu select option Analyze graph then intersection.
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You will be asked to select the second function, then the lower bound and upper bound. As you see on the previous screen capture, the coordinates of the intersection point are given with 3 decimal digits.

Apr 27, 2013 | Office Equipment & Supplies

1 Answer

HELP WITH TI INSPIRE CX calculator


Draw the graphs of the functions you are interested in. While the graphs are displayed Press the Menu key. In the drop down window locate the submenu Settings (number 8 or 9) depending on your calculator
6d8395f7-b10e-4d9e-a7e6-45beadb303a3.jpg76f72147-9dcf-457f-a122-ae70490e2815.jpgThe following screen is displayed with at the top the setting Float.
eb304039-5513-442e-886f-d435de8aa653.jpgFollow the right pointing arrow on the same line as float and select Float 3 or 4 as on the screen capture above.
0c4e79fb-d2eb-4461-821f-87adbd63b387.jpgPoint to the graph of one of the functions select it then press the menu select option Analyze graph then intersection. You will be asked to select the second function, then the lower bound and upper bound. As you see on the previous screen capture, the coordinates of the intersection point are given with 3 decimal digits.
3acdb05f-f573-4e5e-a467-03db35a80ea2.jpg

Apr 27, 2013 | Texas Instruments TI-Nspire Graphic...

1 Answer

How do I graph y = 5(x-10) and y = 3x on the same graph where x min = 0


Just open the Y= editor, and type in the two functions, one on each line. Make sure that the = signs remain highlighted when you move cursor on some other lines (Y3, or Y4).
Then open the Window utility and set Xmin=0
After graphs are drawn you can use the CALC utility to find the Intersection of the two lines.

Jan 29, 2013 | Texas Instruments TI-84 Plus Calculator

1 Answer

When I graph system of linear equations and try to find an intersection point it says no sign change why?


The solve( function was not able to find the intersection point because it lies outside the graph range. The window dimensions are too narrow to contain that point. I suggest you restrict the graph to the quadrant where you suspect the solution to be (example first quadrant if appropriate) : take Xmin=0, Ymin =0 and choose Xmax and Ymax large enough to enclose the intersection point.

Sep 11, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

I have a TI-Nspire Graphic Calculator (Not the CAS.) I had a couple of questions about the calculator. First off, how do I limit the domain on a function that I am graphing. For example, I am graphing y=x...


simply divide the function by the domain you wish.

In your example, you wanted to graph y=x for x>=0.
You should graph the function f1=(x)/(x>0)

To find out when y=900, graph the function in f1, and then graph the equation y=900 (which will be a horizontal line) and use the intersect function to find where they cross. The x-coordinate of the intersection is the solution you are seeking.

Jan 25, 2011 | Texas Instruments TI-Nspire Graphic...

1 Answer

My TI-nspire doesn't seem to be able to find intersections. When i'm trying to find the intersection of the y axis and a line, it asks me for 1st and 2nd graph instead of lower and upper bound, as I...


The intersection function on the t-nspire is meant to find the intersection of two graphs, not of the graph and an axis. The easiest way to do this is to set the equation equal to 0 and then use nSolve() to find the intercept.

Sep 22, 2010 | Texas Instruments TI-Nspire Graphic...

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

1 Answer

ERR: No Sign change...


-0.171x+43.43 and -0.146x+39.83
i tried that and i got the same thing, but i noticed that if you change your window so it fits more of the graph on the right, were you can actually see the lines intersect, then you can get the intersection.
oh, and by the way, the intersection is (144, 18.806)

Sep 24, 2008 | Texas Instruments TI-84 Plus Silver...

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