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How to get the comma function to work on my TI84 for t- interval ?

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Get rid of comma,


To switch the radix mark between the US and European modes, turn the calculator on, then press and release SHIFT, then press and release the decimal point key. You'll note that the shifted function of the key is marked "./," which should serve as a reminder that this functions switches between comma and dot.

Feb 15, 2012 | HP 10bII Calculator

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How to calculate integration in fx-991ms


Syntax is $( function,lower bound,upper bound) =
Press the Integral key. $(
Type in the function eg. sin
Type the variable: SHIFT ) to enter X
Type in a comma separator ,
Type in the lower bound of the integral
Type in a comma separator ,
Type in the upper bound
Close the right parenthesis )
Press = to get the result.
Note: You have to wait for the calculator to return with the answer. Some calculations may require time to perfor.

Jan 11, 2012 | Casio Office Equipment & Supplies

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On the TI-84 Plus Silver Edition, there is no Comma indication above any of the keys! Any idea where it is, or does it even exist? Looks like it should have one.


Don't look above the keys, but at the keys themselves. The comma is not a shifted function, but the primary function of the key located just above the 7 key.

Oct 19, 2010 | Texas Instruments TI-84 Plus Silver...

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Where is the comma key on the ti 84 plus silver edition?


Here is a picture of the keyboard. The comma is in the column of keys below the MODE button. In this column, the comma is between the sine function SIN and the key for the number 7. To its left is the square (x^2) key and to its right is the left parenthesis (.
a37685f.jpg

Aug 24, 2010 | Texas Instruments TI-84 Plus Silver...

2 Answers

Inputting the Domain Range


Feb 26, 2010 - I was right to suggest to you to read the page on domain and range of functions: it would have clarified the concepts to you.
The domain of the sine function is from -infinity to + infinity. But since the function is periodic, with a period equal to 2Pi, by limiting the DOMAIN of values to -1*Pi to +1*PI you see all there is to see. All the rest can be obtained by translation of the curve.

The RANGE of the sine function is LIMITED to values in the interval [-1, 1]
Let us summarize: The DOMAIN of the sine function is ]-infinity, +infinity[ and its RANGE is [-1,+1].
That being said, there is something I would like to point to you
These are the numbers.

You want a "square", so be it. Here is the window setting
and the corresponding picture. Does it look like a square?

c12c0fa.jpg ade7a0b.gif

Why do you insitst on drawing a square? Horizontally you have the angle ( a number with a unit), while vertically you have a ratio of two lengths ( a pure number). Would even think about a square if you drew your sine function with the degree as angle unit. Horizontally you would have a domain [-180 degrees, 180 degrees] while vertically you have a range [-3.14..., +3.14...]. How can that be a square?

I showed you how you can fix every dimension in the graph window (see the first picture) . Choose any values that you believe will give you a square graph. And I do mean to say "that make you believe", because there is no meaning attached to the "fact" that the window looks like a square. An angle cannot be compared to a the projection of one side of a right triangle onto the hypotenuse.

Feb 25, 2010 | Casio CFX-9850G Plus Calculator

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Why do some TI83 program work on a TI84 plus and other don't?


Ti 83 and ti84 really have no difference and operate the same. There was something different or you had varibles used by multiple programs that conflicted w/ the ti84 and it would have done the same on the ti83. If you like to rework it and need help email me at raklein62@yahoo.com

Nov 20, 2008 | Texas Instruments TI-84 Plus Silver...

1 Answer

Sticky keys


Your keyboard needs cleaning.RICHARDM69 

Oct 16, 2008 | Compaq Keyboard

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TI 84 will not graph multiple functions simultaneously


Turn off transformers. Go to apps and go all the way down until you reach transformers then hit enter. Then a menu should appear and hit uninstall that should fix it.

Sep 09, 2008 | Texas Instruments TI-84 Plus Calculator

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