Question about Texas Instruments TI-89 Calculator

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Posted on Oct 08, 2016

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Have you checked the calculator's manual to see if the calculator is able (natively) to handle functions of a complex argument. It is able to handle simple algebra with complex numbers, powers, roots, solving a polynomial equation.

For this calculator, the hyperbolic functions must have a real argument otherwise you get a domain error. But just to make sure, try the exponential function with i (imaginary unit) as argument. If it comes back with a domain error you have your answer.

Posted on Apr 09, 2011

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Posted on Jan 02, 2017

I suspect that you are confusing things a bit.

The inverse sine, called the arcsine is a function defined in the closed interval [-1,1]. And so is the inverse cosine. Any value outside this interval will give you a non-real result (meaning a complex one).

There are no limitations on the domain of definition of the inverse hyperbolic sine or sinh^-1

If your input value is**allowed to be complex**, the arcsine function gives a complex value. See the screen capture

The inverse sine, called the arcsine is a function defined in the closed interval [-1,1]. And so is the inverse cosine. Any value outside this interval will give you a non-real result (meaning a complex one).

There are no limitations on the domain of definition of the inverse hyperbolic sine or sinh^-1

If your input value is

Mar 17, 2014 | Texas Instruments TI 89 Titanium Graphing...

You got a domain error because your angle unit is not set to radians.

Change the angle unit in the MODE configuration screen. In the following screen I calculated the same expression under EXACT and APPROXIMATE calculation formats.

Change the angle unit in the MODE configuration screen. In the following screen I calculated the same expression under EXACT and APPROXIMATE calculation formats.

Jan 23, 2012 | Texas Instruments TI-89 Calculator

You have to set up

Jan 23, 2012 | Texas Instruments TI-89 Calculator

At first,
you can enter a complex number in r*exp(i*theta ) form.
This is exponential form of complex number. However, use this form in Radian
angle mode only. It causes a Domain
error in Degree or Gradian angle mode. To resolving this problem type Mode then
F1 and set up Radian mode

Jan 23, 2012 | Texas Instruments TI-89 Calculator

Have
you checked the calculator's manual to see if the calculator is able
(natively) to handle functions of a complex argument. It is able to
handle simple algebra with complex numbers, powers, roots, solving a polynomial equation.

For this calculator, the hyperbolic functions must have a real argument otherwise you get a error. But just to make sure, try the exponential function with i (imaginary unit) as argument. If it comes back with a domain error you have your answer.

For this calculator, the hyperbolic functions must have a real argument otherwise you get a error. But just to make sure, try the exponential function with i (imaginary unit) as argument. If it comes back with a domain error you have your answer.

Apr 06, 2011 | Texas Instruments TI-89 Calculator

Having gone over a month with no response, I assume this is no longer a problem.

Jun 26, 2010 | Texas Instruments TI-89 Calculator

I had the same problem, this worked for me:

Mode -> page 2 -> Exact/Approx change from "Exact" -> "Auto"

Mode -> page 2 -> Exact/Approx change from "Exact" -> "Auto"

May 12, 2008 | Texas Instruments TI-89 Calculator

An argument must be in a specified domain. For example, ans(100) is not valid because the argument for ans() must be in the range 1–99.

May 11, 2008 | Texas Instruments TI-89 Calculator

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?

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

I have a TI-89 Titanium and I have experienced the same problem. HERE IS HOW TO FIX IT:

Goto "**MODE** " and scroll down the options until you get to

"**COMPLEX FORMAT** " change that option to " __RECTANGULAR__ " and press *ENTER* until you exit out of the " MODE " screen. (very important that you press ' enter ' until you exit because if you don't, it will not save your changes. )

Goto "

"

Sep 19, 2007 | Texas Instruments TI-89 Calculator

May 21, 2014 | Texas Instruments TI-89 Calculator

Feb 17, 2014 | Texas Instruments TI-89 Calculator

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