Question about Texas Instruments TI-83 Plus Calculator

# Sinreg on ti-83 plus

When i go to stat, calc, sinreg it says singular mat. i checked the lists their ok. help

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Posted on Mar 04, 2008

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Posted on Jan 02, 2017

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You can't simply enter 7x+9=30 into the calculator, there is a way to calculate what the x is but its been a few years since I've done these..

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### I am trying to get the TI 83 Plus to fit a sine graph to data that I have in Lists 1 and 2. I typed in the command SinReg L1, L2, Y1. I got an error message:\r\nERR: SINGULAR MAT. What is wrong? What do I...

I was having the same problem. Whenever I hit the graph button after a linear function was entered in Y1 I would get a screen that said "ERR: INVALID DIM 1:Quit"
I messed with a lot of settings but ended up returning settings back to default. The thing that fixed the calculator's ability to graph was UN-highlighting the Plot1, Plot2, and Plot3 words. If they are white on black they are highlighted. If the words are black then they are UN-highlighted.
To UN-highlight Plot1, Plot2, Plot3, do this: move the cursor up to the highlighted Plot1 and hit "enter." Notice the difference? Now do the same to the others and see if it fixes your problem like it fixed mine.
good luck.

Dec 02, 2010 | Texas Instruments TI-83 Plus Silver...

### Where is the sinreg function or key?

1. Enter the data using the [STAT][EDIT].
2. Once you finish populating your lists, press [STAT] button.
3. Three menu options are displayed EDIT, CALC, TESTS
4. Use right arrow to highlight CALC Menu.
5. Use DownArrow to scroll down the list to reach [C:SINEREG] or press Press [ALPHA][C:SineREG].
6. The command will echo on main screen.
7. Specify the lists to be used for the 2-var data and Press[ENTER] to execute command.

Sep 29, 2010 | Texas Instruments TI-84 Plus Calculator

### I am trying to do SinReg but my calculator wont let me! HELP!!!!!

your value is not within the domain of the function, that is why it's giving you that error message, try the value times -1, or -(your value)

May 01, 2010 | Texas Instruments TI-89 Calculator

### When I type a list of numbers into L1 and then hit Stat, calc, 1-var stats L1. i get invalid dim

1. Press [STAT][5:SetUpEditor][ENTER].
2. Press [STAT][1:Edit..]
3. Enter your data in L1.
4. Press [STAT][CALC][1:1-Var Stats].
5. Command echoes on main screen.
6. If ONLY one list contains data, it must be L1.
7. When you do not specify the list in the command line it will take L1 by default.
8. If L1 is empty and the data is in L2, or another but L1, the name of list must be specified.

Feb 19, 2010 | Texas Instruments TI-84 Plus Calculator

### Ti-83 plus silver edition. calc won't turn on.

Hello,
Well, if screen shows the RAM CLEARED message, that means your calculator is working. Just press the [CLEAR] key, message will be erased and you are ready to crunch numbers.

Hope it helps.

Oct 09, 2009 | Texas Instruments TI-83 Plus Silver...

### Can't do inverse of matrices

The problem is with the data. The calculator is telling you that your matrix is singular. Inverting a singular matrix is analogous to dividing by 0. Just as you can't divide by 0, you can't invert a singular matrix.

If you think that the inverse exists, double check the entries in the matrix.

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

### I cannot get sinreg to work

Here are a few things to try.

First, I'd check whether the students put the data
into lists other than L1 and L2. If you do SinReg
with no arguments, the machine defaults to using L1
and L2.

Second, check degree versus radian mode.

Third, I have had problems in the past with SinReg
when the data were *too good*. I think a singular
matrix might be the culprit in a case like this, but I
doubt that's the problem here. If you think it might
be, try deleting every other data point and try the
regression again.

Jan 04, 2008 | Texas Instruments TI-84 Plus Calculator

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