Question about Texas Instruments TI-89 Calculator

# TI 89: Argument Error.

Hello folks- I am trying to use my TI-89 Titanium to factor and do expanding work. Entering the correct information, I get a return of

ERROR: Argument Error

Why is the calculator not doing its job? I tried the F6 menu thing from another article on the internet and it did not help. Any help with this would be appreciated.

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It might be nice to see a solution to this, but I reset the calculator and it seems like everything is working perfectly.

• voyage 200 Oct 02, 2008

I have the same problem

• pbopp Nov 12, 2008

Trying to do long division using the propFrac function and keep getting an argument error.

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I reset the calculator and it did its job- though a solution would be handy.

Posted on Sep 14, 2008

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Posted on Jan 02, 2017

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You can also use the identity (special product) (a-b)(a plus b)=a^2-b^2. It is not that clear here, but if you you factored out the 1/2 you will see it.
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Having gone over a month with no response, I assume this is no longer a problem.

Jun 26, 2010 | Texas Instruments TI-89 Calculator

Hello,
Since this is a discrete distribution, you can only calculate it at integer values of the variable. Hence the last argument in the function (0.75) must be an integer. As you gave a decimal number where an integer is required, the calculator returns a domain error.
Hope it helps.

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