Question about Texas Instruments TI-89 Calculator

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How to use it

I wanted to know how to use the:texas intruments TI-89

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You can turn it on and use it as a simple calculator to perform additions, multiplications, division and so on. But if you really want to take advantage of its capabilities you need to consult the book. Click here (user guide) to access it.
No need to read it like a novel: Read a chapter, practice the exemples and if you feel like it move to another part.
Hope it helps.

Posted on Sep 30, 2009

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I cant find my L1 buttom in ti 89

There isn't one. Unlike the TI-83/84, the TI-89 lets you use any name for lists. If you want a list (or any other item) named "L1" you can spell it out by pressing ALPHA 4 1.

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My Ti-89 is not giving the right answer for cosine. I typed in the cos(42) and it gave me -.39985 when it is supposed to be posotive .74314. Does anyone know what is wrong?

Nothing's wrong, your calculator is giving you the cosine of 42 radians. If you want the cosine of 42 degrees (which is 0.74314), press MODE, down-arrow to the "Angle" line, press right-arrow, select "2:DEGREE", and press ENTER twice.

Dec 13, 2012 | Texas Instruments TI-89 Calculator

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I have a ti-89, but my professor is using a ti-83. the ti-83 has a "stat" button, what would that be on the ti-89?

I meant what are you trying to do? There is not a stat button (that I know of) on the TI 89, but I can guarantee you that there is a way to do what you want to.

Oct 12, 2010 | Texas Instruments TI-89 Calculator

1 Answer

Half my TI-89 calculator screen is blank. Do you know if you can buy a replacement LCD?

You can contact or by email to inquire about where you can buy a screen.

Hope it helps.

Oct 24, 2009 | Texas Instruments TI-89 Calculator

1 Answer

Looking for prgmPivot for Ti-89

Try contacting TI if there was no soluntion in your Operator's Manual.

Oct 17, 2009 | Texas Instruments TI-89 Calculator

1 Answer

Ti-89 titanium

2nd and f6 or something...
make sure minimum and maximum values aren't mixed up!

Oct 21, 2008 | Texas Instruments TI-89 Calculator

3 Answers

Find the antilog on the TI-83 Plus for finding pH in chemistry problems

I reccently had the same problem, but I have a Ti-84 Plus,and I am disgusted by how poorly this matter is covered by Texas Intruments. Esp. since the solution is rather simple.

The antilog key is [2nd] [log] or the 10^x. On your screen it should apear as 10^( and then you just input the value that you want to find the antilog of.

When used to solve pH problems remember to input the pH value as a negative number, since pH= -log[H+] then [H+]= antilog(-pH).

Hope that helped))))) ^^

May 10, 2008 | Texas Instruments TI-83 Plus Calculator

3 Answers


not that I know of, pretty sure it can't

Apr 16, 2008 | Texas Instruments TI-89 Calculator

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