Question about Texas Instruments TI-84 Plus Calculator

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When I type in an equation, the graph is fine, but the table goes up by a strange scale with decimals. How do I get my table to go up by a scale of 1?

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Press + 1 ENTER.

Posted on Mar 20, 2011

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1 Answer

Polynomial equations


This calculator cannot do algebra so it does not handle polynomials. It does not have an EQN (equation) solving mode so you cannot enter an expression set = 0 and solve it for an unknown variable X.
It does have a table Mode where you can enter an expression y= F(X) and generate a table of values. If in the expression F(x) a numerical coefficient is a fraction just enter it as a fraction, possibly enclosed in parentheses. If it is a decimal number just enter it as a decimal number. Converting it to a fraction is not going to generate any more precision in the result. You lose precision when you go from fraction to decimal, but you do not make a number more precise by converting it from a decimal representation to a fraction.

Nov 16, 2013 | Casio fx-300ES Calculator

2 Answers

I am trying to graph a least-squares line on my TI-84 Plus. I have the numbers correctly plugged into my Stat Edit tables, and I am able to access my linear equation, and the first time I entered my graph...


After you enter the data draw the SCATTER plot first.
When you perform the (linear) regression analysis LineReg, save the regression equation to a function, for example Y1
The syntax is
LineReg L1, L2, Y1 ENTER


From the Stat>CALC menu press LineReg
The command echoes on command line
Press [2nd][1] to enter the L1 list on command line
Press [,] to separate
Press [2nd] [2] to enter L2 on the command line
Press [,] the comma again
Press [VARS][>][Y-Vars][1~Function][1:Y1] [ENTER]
Press [GRAPH] to have the regression line equation drawn
on the same screen as the Scatter Plot you drew before.

Sep 13, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I am using the TI Nspire Cas Graphics Calculator. I have calculated a linear regression that has been copied to f1. When I go to graph the function it is displayed in f1 as 100.x+2000. when the function...


Scientific mode is a display mode. It concerns the display of results. If the number are too small or too large they will be displayed in Scientific mode, because the screen does not have an unlimited number of digit positions.

Regarding the dots. A number followed by a radix mark (decimal mark) is considered to be a floating number, while the same number without a decimal mark is considered an integer (whole number).
The CAS is able to do symbolic and exact calculations, so that distinction between floting and integer numbers is important. Sometimes, to force a result to be displayed in its decimal representation all it takes is to append a decimal mark at the end of an integer.
Hope it answers your queation.

Apr 23, 2011 | Texas Instruments TI-Nspire Graphic...

3 Answers

Fibonacci formula won't graph, but will show table


Fibonacci sequence is the series of numbers 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, ...
At first type Fibonacci equation in Y editor with condition x>=0 and then graphing it. See captured images with enlarged form of graph

7_31_2012_12_55_37_pm.jpg


7_31_2012_12_57_51_pm.jpg


7_31_2012_12_58_57_pm.jpg

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

1 Answer

I am trying to see 2 different tables on my table screen from 2 different equations, but it when i go to the screen, instead of showing 2 different tables, it only shows one of them. I also noticed that...


Hi,
In the Y= equation editor you can enter two functions, and graph them both or calculate a table for both. However, the two functions will be evaluated at the same values of X.

Rather than trying to guess what is happening, I will show you how to get your two tables.

If you have used one the applications Inequalz or Transform it si probably still stuck in memory, and you must unload it from the RAM before recovering the usual calculator behavio(u)r
  1. Press the [APPS] button, find Inequalz or Transform, point to it and click [ENTER].
  2. You will be asked to Continue or Quit the application.
  3. Press the number corresponding to Quit (usually 2).
  4. Press [2nd][Y=] (STAT PLOT). Press [4:PlotsOff][ENTER]
  5. Calculator replies Done.
Open the [Y=] equation editor. Type in your equations. Press [ENTER] at the end of each equation. Verify that the [=] signs after Y1, and Y2 remain highlighted when cursor is moved away from them.
Press [2nd][GRAPH] (Table) to see your 2 tables y1 and y2 calculated at the same X.

Hope it helps.
Thank you for rating the solution.


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

1 Answer

Graphing


i had the same problem .... just go to apps and go all the way down transfrm and click it then click the uninstall button !!!

Apr 01, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

No Y's in Table


The tables will not say Y specifically, they only say L1, L2, L3, etc. UNLESS you type in an equation in the "Y=" button menu. When you type an equation in on that page, and then hit "2nd" "GRAPH", you will get X and Y values for that equation.

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

1 Answer

No graph appears?


did you make sure the domain, range, and scale settings are correct?

Oct 29, 2008 | Texas Instruments TI-84 Plus Calculator

4 Answers

How to graph linear equation in two variables


I am not quite sure what you are asking...

(1) if asking for graphing y= -2/3x+2, then press [diamond] [F1: Y=] type in .2/3x +2, see graph by [diamond][graph]

(2) if asking for graphing y= -2/3x+a, where a=3x, then first archive a=3x in Home screen by [home], type 3x [sto] a, then go back to y= menu, and type -2/3x+a in Y1

(3) if asking for graphing an equation that is dependent on 2 variables at the same time, use x-y-z axis (aka, change mode to graphing 3-D by [mode]graph [5:3D]) then enter desired equation in y= menu using Z function in terms of x and y aka z(x,y)= ...)

May 18, 2008 | Texas Instruments TI-89 Calculator

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