Question about Texas Instruments TI-84 Plus Calculator

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Go to APPS, select "Transfrm", and if you do not need it (I am not sure what it actually DOES), select uninstall. The problem should be fixed.

Posted on Apr 30, 2008

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Posted on Jan 02, 2017

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Try rewriting your equations in the equivalent forms that follow.

Y1=3-X

Y2=(1-X)/3

If you do not get a syntax error it means that you were not using the correct minus sign.

If the - is the first symbol after the equal sign you must use negation (-) or change sign key.

Similarly, after the division / key you must use the negation or change sign (-)

Y1=3-X

Y2=(1-X)/3

If you do not get a syntax error it means that you were not using the correct minus sign.

If the - is the first symbol after the equal sign you must use negation (-) or change sign key.

Similarly, after the division / key you must use the negation or change sign (-)

Oct 07, 2010 | Texas Instruments TI-84 Plus Silver...

Some time or other she played with the Transfrm Application. It remains in memory and takes over the graphing capabilities of the native OS. It must be kicked out of memory.

- Press [APPS]
- Use Up or Down arrows (Up is faster) to get to the bottom of the APPS list.
- Locate [:Transfrm], highlight it and press [ENTER]
- In subsequent screen, select the [UNINSTALL] option.
- Go back to the [Y=] screen and enter or edit your functions.
- Press [GRAPH] when finished entering the functions.

Oct 07, 2010 | Texas Instruments TI-84 Plus Calculator

Some time or othefr you played with the Transfrm Application. It remains in memory and takes over the graphing capabilities of the native OS. You must kick it out of memory.

- Press [APPS]
- Use Up or Down arrows (Up is faster) to get to the bottom of the APPS list.
- Locate [:Transfrm], highlight it and press [ENTER]
- In subsequent screen, select the [UNINSTALL] option.
- Go back to the [Y=] screen and enter or edit your functions.
- Press [GRAPH] when finished entering the functions.

Oct 04, 2010 | Texas Instruments TI-84 Plus Silver...

Here is the link to the manual.

Here is a short tutorial to get you started.

**First thing to do before any new type of graphing problem**

1. Turn StatPlots OFF : press [2nd][STATPLOT][4:PlotsOff] [ENTER]

**Second
thing: Clear the statistical lists**

2. Press [2nd][0][PGRM] DownArrow to point to ClrAllLists.

3.Press [ENTER][ENTER]

**Third
thing : Configure the graph type to be FUNCTION graph**

4. Press [MODE]. If FUNC (on fourth line) is highlighted. Press [Y=] and start entering the functions.

5. If FUNC is not highlighted, use Down arrow till 4th line, highlight FUNC and press [ENTER]. Press Press [Y=] and start entering the functions.

**Fourth thing: Enter function and select them for
graphing**

1. As you start entering the function Y1=, notice that the = sign becomes highlighted. Press [ENTER] when Y1 is typed in. Make sure the = sign for Y1 remains highlighted as cursor moves to Y2=.

2. Keep entering the functions and verifying that their = signs remain highlighted as cursor moves to another equation.

3. When finished press [ENTER]

4. Look at the graph style for each function: it is a bit of line to the left of each Y. Here is a picture of all the 7 styles.

To set a graph style, highlight the style to the left of the Y, and press [ENTER]. Each time you press [ENTER] you see a new style, in the order shown on picture.

Avoid the style of Y6, it is bubble, and as such will burst and disappear once graph is finished. Avoid also the triangular ones (for Y3 and Y4) they will shade areas of the graph, and may hide other functions.

**Fifth thing: Graph Functions.**

1. You can press [GRAPH] to see your graphs.

2. If one curve is missing (and you have not set its style to be rhe bubble), it may be due to the Window dimensions.

**Sixth Thing: Set Window dimensions and
Zoom.**

1. Press [ZOOM][6:ZStandard] to use standard window dimensions.

2. If curve still missing, Press [ZOOM][3:Zoom Out] to zoom out so that you may be able to see a bigger range for the functions.

3. If necessary press [WINDOW] and set the Xmin, Xmax, Ymin,Ymax to values of your own.

Dimensions must obey the conditions: Xmin < Xmax, and Ymin < Ymax.

Here is a short tutorial to get you started.

1. Turn StatPlots OFF : press [2nd][STATPLOT][4:PlotsOff] [ENTER]

2. Press [2nd][0][PGRM] DownArrow to point to ClrAllLists.

3.Press [ENTER][ENTER]

4. Press [MODE]. If FUNC (on fourth line) is highlighted. Press [Y=] and start entering the functions.

5. If FUNC is not highlighted, use Down arrow till 4th line, highlight FUNC and press [ENTER]. Press Press [Y=] and start entering the functions.

1. As you start entering the function Y1=, notice that the = sign becomes highlighted. Press [ENTER] when Y1 is typed in. Make sure the = sign for Y1 remains highlighted as cursor moves to Y2=.

2. Keep entering the functions and verifying that their = signs remain highlighted as cursor moves to another equation.

3. When finished press [ENTER]

4. Look at the graph style for each function: it is a bit of line to the left of each Y. Here is a picture of all the 7 styles.

To set a graph style, highlight the style to the left of the Y, and press [ENTER]. Each time you press [ENTER] you see a new style, in the order shown on picture.

Avoid the style of Y6, it is bubble, and as such will burst and disappear once graph is finished. Avoid also the triangular ones (for Y3 and Y4) they will shade areas of the graph, and may hide other functions.

1. You can press [GRAPH] to see your graphs.

2. If one curve is missing (and you have not set its style to be rhe bubble), it may be due to the Window dimensions.

1. Press [ZOOM][6:ZStandard] to use standard window dimensions.

2. If curve still missing, Press [ZOOM][3:Zoom Out] to zoom out so that you may be able to see a bigger range for the functions.

3. If necessary press [WINDOW] and set the Xmin, Xmax, Ymin,Ymax to values of your own.

Dimensions must obey the conditions: Xmin < Xmax, and Ymin < Ymax.

Feb 11, 2010 | Texas Instruments TI-84 Plus Silver...

Hello,

You bet I do, provided

1. there are no hardware problems I am not aware of;

2. that you are willing to follow my instructions.

**First thing to do before any new type of problem**

1. Turn StatPlots OFF : press [2nd][STATPLOT][4:PlotsOff] [ENTER]

**Second thing: Clear the statistical lists**

2. Press [2nd][0][PGRM] DownArrow to point to ClrAllLists.

3.Press [ENTER][ENTER]

**Third thing : Configure the graph type to be FUNCTION graph**

4. Press [MODE]. If FUNC (on fourth line) is highlighted. Press [Y=] and start entering the functions.

5. If FUNC is not highlighted, use Down arrow till 4th line, highlight FUNC and press [ENTER]. Press Press [Y=] and start entering the functions.

**Fourth thing: Enter function and select them for graphing**

1. As you start entering the function Y1=, notice that the = sign becomes highlighted. Press [ENTER] when Y1 is typed in. Make sure the = sign for Y1 remains highlighted as cursor moves to Y2=.

2. Keep entering the functions and verifying that their = signs remain highlighted as cursor moves to another equation.

3. When finished press [ENTER]

4. Look at the graph style for each function: it is a bit of line to the left of each Y. Here is a picture of all the 7 styles.

To set a graph style, highlight the style to the left of the Y, and press [ENTER]. Each time you press [ENTER] you see a new style, in the order shown on picture.

Avoid the style of Y6, it is bubble, and as such will burst and disappear once graph is finished. Avoid also the triangular ones (for Y3 and Y4) they will shade areas of the graph, and may hide other functions.

**Fifth thing: Graph Functions.**

1. You can press [GRAPH] to see your graphs.

2. If one curve is missing (and you have not set its style to be rhe bubble), it may be due to the Window dimensions.

**Sixth Thing: Set Window dimensions and Zoom.**

1. Press [ZOOM][6:ZStandard] to use standard window dimensions.

2. If curve still missing, Press [ZOOM][3:Zoom Out] to zoom out so that you may be able to see a bigger range for the functions.

3. If necessary press [WINDOW] and set the Xmin, Xmax, Ymin,Ymax to values of your own.

Dimensions must obey the conditions: Xmin < Xmax, and Ymin < Ymax.

Hope that helps.

5

You bet I do, provided

1. there are no hardware problems I am not aware of;

2. that you are willing to follow my instructions.

1. Turn StatPlots OFF : press [2nd][STATPLOT][4:PlotsOff] [ENTER]

2. Press [2nd][0][PGRM] DownArrow to point to ClrAllLists.

3.Press [ENTER][ENTER]

4. Press [MODE]. If FUNC (on fourth line) is highlighted. Press [Y=] and start entering the functions.

5. If FUNC is not highlighted, use Down arrow till 4th line, highlight FUNC and press [ENTER]. Press Press [Y=] and start entering the functions.

1. As you start entering the function Y1=, notice that the = sign becomes highlighted. Press [ENTER] when Y1 is typed in. Make sure the = sign for Y1 remains highlighted as cursor moves to Y2=.

2. Keep entering the functions and verifying that their = signs remain highlighted as cursor moves to another equation.

3. When finished press [ENTER]

4. Look at the graph style for each function: it is a bit of line to the left of each Y. Here is a picture of all the 7 styles.

To set a graph style, highlight the style to the left of the Y, and press [ENTER]. Each time you press [ENTER] you see a new style, in the order shown on picture.

Avoid the style of Y6, it is bubble, and as such will burst and disappear once graph is finished. Avoid also the triangular ones (for Y3 and Y4) they will shade areas of the graph, and may hide other functions.

1. You can press [GRAPH] to see your graphs.

2. If one curve is missing (and you have not set its style to be rhe bubble), it may be due to the Window dimensions.

1. Press [ZOOM][6:ZStandard] to use standard window dimensions.

2. If curve still missing, Press [ZOOM][3:Zoom Out] to zoom out so that you may be able to see a bigger range for the functions.

3. If necessary press [WINDOW] and set the Xmin, Xmax, Ymin,Ymax to values of your own.

Dimensions must obey the conditions: Xmin < Xmax, and Ymin < Ymax.

Hope that helps.

5

Oct 29, 2009 | Texas Instruments TI-84 Plus Silver...

Hello,

Sorry if you already know that, but I want to make sure we understand one another.

Say you want to graph the function Y1=2X+3.

You press [MODE] to make sure that the FUNC on 4th line is highlighted permanently. If it is you press [Y=]

On the first line where it says Y1= you enter 2*[X,T,Theta,n] +3.

The X is accessed with the key to the right of the [ALPHA] key.

As you key in your function, notice that the equal sign after Y1 is highlighted and remains so. When you finish entering the function press [ENTER] so that the cursor moves to the line Y2=. Make sure that the = sign after the Y1 in previous equation remains highlighted.

You can now draw the graph by pressing [GRAPH] or generate the table Y1=f(X) by pressing [2nd][TABLE].**Under no conditions should you enter YOUR own values**. If the table does not appear there may be a problem, and you will not solve it by entering values.

Now let us try to get you calculator to work as it should.

Press [2nd][STATPLOT][4:PlotsOff] , the command PlotsOff echoes on main screen. Press [ENTER] to turn statistical plots OFF. Screen displays Done.

Press [2nd][CATALOG] [ENTER]. The list of all avilable command appears. Scroll down till you reach ClrAllLists. Move arrow to the correspondig line and press [ENTER] , command echoes on main screen as ClrAllLists. Press [ENTER] to erase all old statistical lists that may be stored in the calculator memory.

Now you are ready to graph or create the table of values. Press [2nd][Table] and the table should be displayed.**All you can do with the values in the table is to look at them, examine them. You cannot modifie nor erase them.**

If, for reasons of your own, you think you ought to be allowed to enter YOUR values, in the table, then this is not graphing functions. The name for that is DOING STATISTICS. And the procedure is tottaly different: You enter YOUR values in lists and use the calculator to draw the data points, and to find the best fit (the curve that models the pattern of data distribution best). When you decide which fit is the best, you can use the calculator to extract the equation for the curve and, if you want it, to draw the curve on the same graph where you raw data is represented.

Hope these clarifications helps.

Before jumpin

Sorry if you already know that, but I want to make sure we understand one another.

Say you want to graph the function Y1=2X+3.

You press [MODE] to make sure that the FUNC on 4th line is highlighted permanently. If it is you press [Y=]

On the first line where it says Y1= you enter 2*[X,T,Theta,n] +3.

The X is accessed with the key to the right of the [ALPHA] key.

As you key in your function, notice that the equal sign after Y1 is highlighted and remains so. When you finish entering the function press [ENTER] so that the cursor moves to the line Y2=. Make sure that the = sign after the Y1 in previous equation remains highlighted.

You can now draw the graph by pressing [GRAPH] or generate the table Y1=f(X) by pressing [2nd][TABLE].

Now let us try to get you calculator to work as it should.

Press [2nd][STATPLOT][4:PlotsOff] , the command PlotsOff echoes on main screen. Press [ENTER] to turn statistical plots OFF. Screen displays Done.

Press [2nd][CATALOG] [ENTER]. The list of all avilable command appears. Scroll down till you reach ClrAllLists. Move arrow to the correspondig line and press [ENTER] , command echoes on main screen as ClrAllLists. Press [ENTER] to erase all old statistical lists that may be stored in the calculator memory.

Now you are ready to graph or create the table of values. Press [2nd][Table] and the table should be displayed.

If, for reasons of your own, you think you ought to be allowed to enter YOUR values, in the table, then this is not graphing functions. The name for that is DOING STATISTICS. And the procedure is tottaly different: You enter YOUR values in lists and use the calculator to draw the data points, and to find the best fit (the curve that models the pattern of data distribution best). When you decide which fit is the best, you can use the calculator to extract the equation for the curve and, if you want it, to draw the curve on the same graph where you raw data is represented.

Hope these clarifications helps.

Before jumpin

Oct 07, 2009 | Texas Instruments TI-84 Plus Calculator

Hello,

1.Press [MODE], scroll to set**Func**tion graphing mode.

2.Press [STAT] [5:SetUpEditor], command is pasted in home screen. Press [ENTER]. Screen displays Done. This clears old values in lists

3. Press [STAT][1:Edit] to enter data.

Press [ENTER] after each number. Cursor moves to next row. After finishing the data of Listt L1, use arrow right and UP to the head of list L2. Enter the values in list L2. Press Enter after last element.

4. Press [Y=] to display Y= editor. Clear function Y1 and all functions or remove highlight from the = in Y2, Y3, etc.

5.Press [2nd][STATPLOT]1 to select 1:Plot1

The blinking cursor on ON means graph will be drawn. Type chosen is Scatter plot. Mark chosen is a dot.

Press [ZOOM][9:ZoomStat]

If you think that the curve look like a straight line you can try to do a linear regression.

Press [STAT] Arrow right to highlight [CALC]

Select [4: LinReg(ax+b)]

LinReg(ax+b) echoes on run screen. Press [2nd] L1 Press comma, Press [2nd] L2 press comma Press [VARS] Arrow right to select [Y:VARs][1:Function] [ENTER][1:Y1]

ENTER

That is the equation for the linear regression. As you see eqaution has been saved in Y1. Press [GRAPH] to get the data and the regression curve drawn on same graph.

Hope it helps.

1.Press [MODE], scroll to set

2.Press [STAT] [5:SetUpEditor], command is pasted in home screen. Press [ENTER]. Screen displays Done. This clears old values in lists

3. Press [STAT][1:Edit] to enter data.

Press [ENTER] after each number. Cursor moves to next row. After finishing the data of Listt L1, use arrow right and UP to the head of list L2. Enter the values in list L2. Press Enter after last element.

4. Press [Y=] to display Y= editor. Clear function Y1 and all functions or remove highlight from the = in Y2, Y3, etc.

5.Press [2nd][STATPLOT]1 to select 1:Plot1

The blinking cursor on ON means graph will be drawn. Type chosen is Scatter plot. Mark chosen is a dot.

Press [ZOOM][9:ZoomStat]

If you think that the curve look like a straight line you can try to do a linear regression.

Press [STAT] Arrow right to highlight [CALC]

Select [4: LinReg(ax+b)]

LinReg(ax+b) echoes on run screen. Press [2nd] L1 Press comma, Press [2nd] L2 press comma Press [VARS] Arrow right to select [Y:VARs][1:Function] [ENTER][1:Y1]

ENTER

That is the equation for the linear regression. As you see eqaution has been saved in Y1. Press [GRAPH] to get the data and the regression curve drawn on same graph.

Hope it helps.

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

Hello,

If I understand correctly you want to use the graph function Y1, or Y2, ..in an equation. In the [RUN] screen press [VARS][F4:GRPH][F1:Y]. It echoes on the screen as Y. Press 1 and you have Y1.

However, you will not be able to manipulate it symbolically, because that variable contains the value of Y1 for X=0, if you have not drawn it yet. or tha value of Y1 for the last X used to draw the graph Y1=f(X).

The calculator is not capable of manipulating symbolic expressions. what you want it to do is beyond its capabilities.

Hope it helps.

If I understand correctly you want to use the graph function Y1, or Y2, ..in an equation. In the [RUN] screen press [VARS][F4:GRPH][F1:Y]. It echoes on the screen as Y. Press 1 and you have Y1.

However, you will not be able to manipulate it symbolically, because that variable contains the value of Y1 for X=0, if you have not drawn it yet. or tha value of Y1 for the last X used to draw the graph Y1=f(X).

The calculator is not capable of manipulating symbolic expressions. what you want it to do is beyond its capabilities.

Hope it helps.

Sep 16, 2009 | Casio FX-9750GPlus Calculator

Go into the Y= editor by pressing the Y= key. Select a function, then press the left-arrow a couple of times. Now press ENTER and see whether the symbol on the far left changes. If so, you've just changed the function style. Press ENTER repeatedly to select the function style. Your choices are Line, Thick, Above, Below, Path, Animate, and Dot.

Nov 21, 2008 | Texas Instruments TI-84 Plus Calculator

Hello,

It is actually quite simple. The calculator can perform severa types of graphing, but the most common is the drawing of functions defined by a relation of the form y= fonction(x), or y=f(x) for short.

The procedure is described for the TI 89 Titanium. It is valid for the TI 89 except if I enter the color of a key.

1. Before you start, you should set up the calculator to begin a New Problem. The command for that is accessed through the menus.

Press the [HOME] key to go to main calculator folder.

In Home folder, press [2nd][F1] to access [F6][2:NewProb]. Press [ENTER] to execute the command. Screen should display Done.

2. Press yellow [Diamond] key (it is the equivalent of the CTRL key in computers) then [F1] to open the [Y=] editor.

3. Use the keypad to enter your first function on Y1= line. Press [ENTER] when finished with Y1. This will select the curve to be drawn, and a check mark appears to the left of the Y, in Y1=. If there is no check mark, the curve will not be drawn. If that happens, move cursor on Y1= and highlight it and press ENTER.

4. Enter the next function. Press [ENTER] when finished.

Try the functions Y1=3*x+0.5 and Y2=x^2 -1.

5. Press the yellow [Diamond] key to access [GRAPH]. The cartesian screen appears, the calculator starts graphing. While graphs are being drawn, the indicator BUSY is displayed at the bottom of the screen, on the right.

Here is what your screen looks like.

6. If BUSY indicator disappears, graphs are finished. If nothing is displayed on the screen except the axes, the functions may be out of range. In that case you can adjust the window dimensions.

You can change the values of Xmin, Xmax, Ymin, Ymax, or press [F2:Zoom] to use any of the zooming options.

This is the basic procedure to draw y=f(x) graphs.

Hope it helps.

It is actually quite simple. The calculator can perform severa types of graphing, but the most common is the drawing of functions defined by a relation of the form y= fonction(x), or y=f(x) for short.

The procedure is described for the TI 89 Titanium. It is valid for the TI 89 except if I enter the color of a key.

1. Before you start, you should set up the calculator to begin a New Problem. The command for that is accessed through the menus.

Press the [HOME] key to go to main calculator folder.

In Home folder, press [2nd][F1] to access [F6][2:NewProb]. Press [ENTER] to execute the command. Screen should display Done.

2. Press yellow [Diamond] key (it is the equivalent of the CTRL key in computers) then [F1] to open the [Y=] editor.

3. Use the keypad to enter your first function on Y1= line. Press [ENTER] when finished with Y1. This will select the curve to be drawn, and a check mark appears to the left of the Y, in Y1=. If there is no check mark, the curve will not be drawn. If that happens, move cursor on Y1= and highlight it and press ENTER.

4. Enter the next function. Press [ENTER] when finished.

Try the functions Y1=3*x+0.5 and Y2=x^2 -1.

5. Press the yellow [Diamond] key to access [GRAPH]. The cartesian screen appears, the calculator starts graphing. While graphs are being drawn, the indicator BUSY is displayed at the bottom of the screen, on the right.

Here is what your screen looks like.

6. If BUSY indicator disappears, graphs are finished. If nothing is displayed on the screen except the axes, the functions may be out of range. In that case you can adjust the window dimensions.

You can change the values of Xmin, Xmax, Ymin, Ymax, or press [F2:Zoom] to use any of the zooming options.

This is the basic procedure to draw y=f(x) graphs.

Hope it helps.

Aug 27, 2008 | Texas Instruments TI-89 Calculator

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