Question about Texas Instruments TI-84 Plus Calculator

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It's the 2nd shift of the ^ key, far right column, between the CLEAR and divide keys.

Posted on Aug 25, 2010

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Posted on Jan 02, 2017

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The equal sign of the TI83/84/Plus is a **relational operator **like less than , greater than, less than or equal to)** **You use it when you are **testing if two values (numbers, expressions, or matrices) are equal.**

For example, if in one your programs what you do at a certain time depends on the equality of two expressions, you test the equality by a statement :

If A=B do this action.

For example, if in one your programs what you do at a certain time depends on the equality of two expressions, you test the equality by a statement :

If A=B do this action.

Jan 30, 2012 | Texas Instruments TI-84 Plus Silver...

On these units, the "equals" sign ([=]) is located in the [TEST] menu. This menu is a [2nd] function of the [MATH] key.

This function is used to test if two expressions are equals. To evaluate an expression, simply hit [ENTER].

Good luck.

This function is used to test if two expressions are equals. To evaluate an expression, simply hit [ENTER].

Good luck.

Mar 01, 2011 | Texas Instruments TI-84 Plus Calculator

If you wan to solve an equation using the SOLVE feature you enter it as follows (your example)

You should rewrite it as 5/4*X-18+3 (= 0). Implicitly, the calculator assumes that the right side is ZERO and you do not enter any right side nor an equal sign.

Type in

5/4 [*] [X,T,theta, n] -18 +3 [ALPHA] [ENTER] (SOLVE)

You should get an answer -780/47 or the decimal equivalent (depending on display mode.)

You should rewrite it as 5/4*X-18+3 (= 0). Implicitly, the calculator assumes that the right side is ZERO and you do not enter any right side nor an equal sign.

Type in

5/4 [*] [X,T,theta, n] -18 +3 [ALPHA] [ENTER] (SOLVE)

You should get an answer -780/47 or the decimal equivalent (depending on display mode.)

Feb 12, 2011 | Texas Instruments TI-84 Plus Calculator

Hello.

The less than and greater than signs are above the "(" and ")" keys.

Hope this helps.

The less than and greater than signs are above the "(" and ")" keys.

Hope this helps.

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

hello sir,
Press "second" "math", and it should be the first thing listed. If you need other commands hit "second" "0" that will enter the catalog and you can press any letter (without hitting alpha) to jump to that letter in the list. Please click on the following link to see the manual of the TI-84 Plus Calculator:
http://education.ti.com/guidebooks/graphing/84p/TI84PlusGuidebook_Part2_EN.pdf

kindly rate me.. thanks for using fixya..

kindly rate me.. thanks for using fixya..

Mar 03, 2010 | Texas Instruments TI-84 Plus Calculator

Hi,

You cannot use the ± in the definition of a function. If you need to consider two alternatives, you have draw each function separately, one function as Y1 and the other as Y2. I just checked the catalog of commands, and there is no ±.

Hope it helps.

Thanks for using FixYa

You cannot use the ± in the definition of a function. If you need to consider two alternatives, you have draw each function separately, one function as Y1 and the other as Y2. I just checked the catalog of commands, and there is no ±.

Hope it helps.

Thanks for using FixYa

Nov 19, 2009 | Texas Instruments TI-84 Plus Calculator

Hello,

Please, read the following, even if you already know some of its contents.

Hope it helps.

Please, read the following, even if you already know some of its contents.

- Once you enter an equation, the corresponding equal sign is
highlighted by default.
- Before you draw the 2 graphs, move the cursor
to Y3 or Y4 and verify that the = signs for Y1 and Y2 remain
highlighted.
- If one is not highlighted, move the cursor on it and press ENTER.
- If you still have problem, press [2nd][STATPLOTS][4: PlotsOff] [ENTER].
- Command
**PlotsOff**echoes on main screen. - Press [ENTER], screen displays
**Done.** **Restart the graphing procedure.**- If all else fails, just reset the RAM by pressing [2nd][MEM][7:Reset][1:All RAM][2:Reset], press [CLEAR] to clear the message.

Hope it helps.

Nov 10, 2009 | Texas Instruments TI-84 Plus Calculator

Hello,

1.Turn StatPlotsOff to avoid errors: Press [2nd][STATPLOT][4:PlotsOff][ENTER].

2. Verify that in [MODE]**Func** is highlighted. if it is not, use arrow to highlight Func and press [ENTER[ to validate.

3. Press [Y=] and type in the functions. Press [ENTER] at the end of each function.

4. Before pressing [GRAPH], make sure that all the = signs that define the functions to be graphed are highlighted white on black. If one is not highlighted, use arrow to move cursor on the sign and press [ENTER].

5. Select the graph styles: The small piece of line to the left of a Y that defines a function is the style. Move cursor on it and press [ENTER] . Each [ENTER] (on same line) select another style.

6. Press [GRAPH] to see the graphs.

7. If one of them is missing, verify that its = is still highlighted, then use the [WINDOW] to set the Window dimensions, or the [ZOOM] to adjust.

Hope it helps.

1.Turn StatPlotsOff to avoid errors: Press [2nd][STATPLOT][4:PlotsOff][ENTER].

2. Verify that in [MODE]

3. Press [Y=] and type in the functions. Press [ENTER] at the end of each function.

4. Before pressing [GRAPH], make sure that all the = signs that define the functions to be graphed are highlighted white on black. If one is not highlighted, use arrow to move cursor on the sign and press [ENTER].

5. Select the graph styles: The small piece of line to the left of a Y that defines a function is the style. Move cursor on it and press [ENTER] . Each [ENTER] (on same line) select another style.

6. Press [GRAPH] to see the graphs.

7. If one of them is missing, verify that its = is still highlighted, then use the [WINDOW] to set the Window dimensions, or the [ZOOM] to adjust.

Hope it helps.

Oct 30, 2009 | Texas Instruments TI-84 Plus Calculator

ok well go to the 'y=' button

type in the equation and make sure that the equals sign after y has like a black box around it, making the actual = white. so make sure both of those = signs of the 2 equations that you want to graph are like that, and thats about it.

type in the equation and make sure that the equals sign after y has like a black box around it, making the actual = white. so make sure both of those = signs of the 2 equations that you want to graph are like that, and thats about it.

Jun 19, 2009 | Texas Instruments TI-84 Plus Silver...

The comma is located on top of number 7 key.

See page 5 on teh user manual to learn how to operate the keyboard on a TI 84 Plus:

*TI*-*84* Plus *TI*-*84* Plus Silver Edition Guidebook

See page 5 on teh user manual to learn how to operate the keyboard on a TI 84 Plus:

Mar 16, 2009 | Texas Instruments TI-84 Plus Silver...

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