Question about Texas Instruments TI-84 Plus Calculator

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Graqphing function my algebraq 2 homework involves graphing a function or equation and then tell if it is a function how do i do this on my calculator

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It is a function if it passes the verticle line test. That is if you graph a problem and a verticle line passes through the problem only once then it is a function. If the verticle line passes through the problem more than once it is not a function.

Posted on Aug 23, 2008

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Cannot graph two equations together, & trig graphs are not correct.


At first in Y editor type Y1=2*cosx and for example y2=[5*exp(-x)]-5 and then graphing it. Set RAD mode of course. See captured images
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Jul 10, 2012 | Texas Instruments TI-84 Plus Silver...

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So on my graphing calculator i put my equation x^3-x^2-10x-8. then i hit graph and it says err:invalid DIM.


INVALID DIM error message may occur if you are trying to graph a function that does not involve the stat plot features. The error can be corrected by turning off the stat plots. To turn the stat plots off, press 2nd then stat plot, and then select 4:PlotsOff. By the way it is easy to graphing function y=x^3-x^2-10x-8.
See captured images: full graph and detail of the left side max


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As you can see this function have zero values in the points -2, -1 and 4

Mar 04, 2012 | Texas Instruments TI-84 Plus Silver...

1 Answer

When attempting to solve graphing equations GETTING graphing error says INVALID DIM


You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

If this doesn't do it, please reply to this post and give a sample equation that causes this error.

Sep 09, 2011 | Texas Instruments TI-83 Plus Calculator

1 Answer

Everytime I hit graph it tells me invalid dim, but I am more than positive my dimension are corrrect. What do I do ? It is not graphing any of my equations


You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

If this doesn't do it, please reply to this post and give the function(s) you're trying to plot.

Jul 31, 2011 | Texas Instruments TI-84 Plus Silver...

1 Answer

Im trying to graph a parametric equation and whenever the equation has an exponent/power in it the calculator says Syn error so i know how to graph x=2 cos T, y=2 sin T and similar equations without a...


To enter powers of trigonometric functions you must enclose the functions in parentheses and then apply the exponent to the whole. For example X1t =(sin T)^3 , Y1t=(cos T)^3 will give you a shape similar to a rhombus with concave sides. The symbol ^syands for the operation of raising to a power. The key is the one with the caret symbol ^ , and it is wedged between the xsqure and EXIT keys (third row of keys).
As regards the cotangent, use the equivalent definition cot(X)=1/tan(X).

Jul 26, 2011 | Casio FX-9750GPlus Calculator

1 Answer

Invalid dim, i have been graphing equations and all of a sudden it pops up with that error message


You're probably trying to graph a function that does not involve stat plot features. You can correct this by turning off the stat plot features. Press "2ND" "STAT PLOT" and then select 4:PlotsOff.

If that doesn't do it, please reply to this post specifying the equation(s) you're trying to graph.

Nov 03, 2010 | Texas Instruments TI-84 Plus Silver...

2 Answers

TI-83 Plus Calculator: I am trying to graph an equation and I get the "ER...


If the message appears when you try to graph functions deactivate the statistical plots. To do so:

Press [2nd][Y=] to access (STAT PLOTs)
Select [4:PlotsOff] then [ENTER]

That should solve your problem. Post a comment to this thread if you still have trouble graphing.

If the message appears in another context, it sure would help knowing the context of the error.

May 07, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

ERR: INVALID DIM (That's the error message I receive every time I try to graph an equation)


Hello,
[2nd][MEM][7:Reset][1:All ram][2:Reset] [ENTER]. Screen shows RAM cleared. Clear the screen and use [Y=] to enter the functions you want to graph.
Hope it helps.

Sep 27, 2009 | 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

2 Answers

Entering inequalities into TI-84 to graph


I think you should get a Texas Instruments calculator and push the 'y=' button then put the equation like '2x+4' in the y1 area. You can put the X by using the variable botton. I hope my english makes sense I am not a native speaker.

Jan 19, 2008 | Texas Instruments TI-84 Plus Calculator

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