Question about Texas Instruments TI-89 Calculator

2 Answers

TI-89 problems I've been have problems with my TI-89, whenever i try to factor something like x2+2x+1, the calculator will not factor, but it just gives me a number. This also happens when i attemp to find a derivative or an integral. i have things stored in the text so i dont want to completely reset my calculator, so what is the problem and what can i do?

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  • Anonymous Apr 02, 2008

    my TI-89 titanium, whenever i try to factor something like x2+2x+1, the calculator will not factor, but it just gives me a number.

  • camurphy08 Jun 01, 2008

    when i go to factor something on my 89 it will not give me an answer i'm looking for but, rather numbers. for example:
    (x^2-8x+15)

    and it will give me (3.)^2*7.
    and there are very distinct dots/periods after each number.

    how do i get this to stop?

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What i would do is go to the home screen and hit f6 and hit 'clear a-z' then you're good.

Posted on Sep 20, 2008

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This is because you have a number stored to x. Go to var-link and find the varible x and delete it. it will work after that

Posted on Jul 09, 2008

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1 Answer

My ti 89 won't factor


The polynomial cannot be factored in the set of Real numbers: The roots of the polynomial equation are complex.
You should use the command cFactor( found under F2:Algebra> A:Complex>2:cFactor(
However, you should set the Mode Complex>Rectangular, and the EXACT/APPROXIMATE mode to Exact, otherwise your roots will be in decimal representation.
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Jan 01, 2014 | Texas Instruments TI-89 Calculator

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Does a TI 89 have an advantage over a TI 84 in a 10th grade algebra class? My sons teacher won't let him use an 89. He says it does too much of the work for him. Is this right?


the 89 is in my opinion not need/ approriate for a 10th grade algebra class, or worth the extra money.

for example the 84 wont output variables it must output a number

so your son may be doing factoring, if he inserts (x^2+2x+1) the 89 will allow him to enter it and factor it as (x+1)(x+1) or (x+1)^2 the 84 will not.

the 84 will do pleanty as far as graphing, finding zeros,plotting, calculations, and should get him any answer that he seeks so long that he knows how to use the 84. It just wont give him the intermediate steps the the 89 is able to give.

hope this helps

Apr 05, 2010 | Texas Instruments TI-84 Plus Calculator

1 Answer

Whenever i try to link my calculator with other ones it always says error in xmit. no matter what i do


Hello,
Read the following answer from the TI Knowledge Base.
Hope it helps.

How can I troubleshoot an Error in Xmit error message when transferring data between two graphing calculators?

The Error in Xmit error message is returned when a connection cannot be established between two calculators when attempting to transfer data. There are several factors that can contribute to this error message.
• The calculators being connected are not compatible for data transfer.
• The data cable is not firmly connected to both units.
• The receiving calculator is not in receive mode.
• The I/O port on one of the graphing calculators is damaged.
The procedure for connecting two graphing calculators is as follows:

• Connect the data cable to the I/O port of each unit. The cable will fit tightly in the I/O port and snap into place. If silver from the cable is visible, the cable is not properly connected.
• Access the Link menu on each unit
• Place the receiving graphing calculator on "Receive"
• Place the sending unit on "Transmit" or "Send" from the Link menu.

Once the data has been selected, the transfer will commence accordingly.

The data transfer protocols for graphing calculator is as follows:

• TI-73 - Link allows data sharing with another TI-73, TI-82, TI-83, and TI-83 Plus.
• TI-82 - Link allows data sharing with another TI-82.
• TI-83 - Link allows data sharing with the TI-82, TI-83 family calculator, and TI-84 Plus family calculator.
• TI-83 Plus/TI-84 Plus family- Link allows data sharing with another TI-82, TI-83 family calculator, and TI-84 Plus family calculator.
• TI-85 - Link allows data sharing with another TI-85(To a TI-86. Not From a TI-86).
• TI-86 - Link allows data sharing with another TI-86 and from a TI-85 to a TI-86.
• TI-89 family- Link allows data sharing with another TI-89 family calculator and from a TI-92 family calculator.
• TI-92 family- Link allows data sharing with another TI-92 family calculator and from a TI-89 family calculator.
• Voyage™ 200 - Link allows data sharing with another Voyage 200 and TI-92 family calculator.



If the cable does not fit properly into the I/O port, or if the I/O port appears to be damaged (broken or separated plastic, obstruction inside the port), call 1-800-TI-CARES (1-800-842-2737) M-TH 8:00 AM - 7:00 PM FRI 10:00 AM - 7:00 PM Central Standard Time to speak to a representative or sending an email to ti-cares@ti.com.

Oct 22, 2009 | Texas Instruments TI-83 Plus Calculator

1 Answer

Can you Factor on a TI-84? IF not, does the TI-89?


Well, to answer part of your question, yes... the TI-89 does factor like this. it is inputted like this:

factor(6*x^2+11*x+4,x)

Check the catalog in the TI-84 (which is 2nd-zero) and look under F for factor()

Jan 12, 2009 | Texas Instruments TI-89 Calculator

5 Answers

Factoring


x^2+5x+7 won't factor any more.. if you're trying to solve it, do:

solve(x^2+5x+7=0,x)

May 15, 2008 | Texas Instruments TI-89 Calculator

1 Answer

Factoring and expanding


try going to var link and deleting any variables like x and whatever you're trying to factor as they may be stored as lists and thus come out factored like that

Apr 25, 2008 | Texas Instruments TI-89 Calculator

5 Answers

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WHAT IS THE KEY OR KEYS TO GET THE INVERSE LOG FUNCTION?

Apr 02, 2008 | Texas Instruments TI-89 Calculator

3 Answers

Dec to hex conversion


Not sure if TI-89 mode keys are the same, but here's the solution for that calculator:
1. Hit the mode key
2. Hit F3 to get tot Exact/Approx (might be different for 89T).
3. Set it to Exact.
4. Take a look at T-89 manual pages 327, 328, 329.
Nice of TI to NOT include that in the manual, huh?

Dec 13, 2007 | Texas Instruments TI-89 Calculator

1 Answer

TI-89 Factoring Not Working


I think what you want to do is not to factor but to expand, which is the option right under factor [F2, 3]. expand((x-5)^2) = x^2-10x+25

Jul 13, 2007 | Texas Instruments TI-89 Calculator

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