Question about Texas Instruments TI-89 Calculator

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Error message i have a TI-89 titanium. I'm trying to do my calculus homework and when i have my calculator on function, radian, exact, all that .. and when i go to graph (x)/((x^2-4)^(1/2)) .. in words that means "X divided by the square root of X to the second power minus 4 .. and every time i press the graph button and error message appears and tells me "dimension" .. what does that mean .. please help me out .. thank you, friendly011511

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Re: error message - Texas Instruments TI-89 Calculator Calculators

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Re: error message

Please can anyone tell me student learning outcomes for area and volume ?

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Re: error message

Dimension error meaning that a list or matrix index is not valid. For example, if the list {1,2,3,4} is stored in L1 then L1[5] is a dimension error because L1 only contains four elements. Finally, it is easy to solving your problem. See captured images



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Calculus cos^-1 Domain Error

If you're in the MATHPRINT mode, press
2ND [COS^-1] ( 8 - 3 2ND [sqrt] 2 1 right-arrow ) / 2 5 ENTER

If you're in the CLASSIC mode, press
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In either case you should get an answer of about 103.

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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.

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I am not able to integration on my ti 89 titanium calculator...i mean its only solving simple ones and for the big ones like ((t+2)^(1/2))/e^ completely messed up my calculus bc exam

Well it is just a calculator, it cannot do all the possible integrals you might think of. You may try to help it a bit by using the usual techniques that you were taught to transform the integral into another it might be able to find: change of variables, integration by parts. You cannot let the success on your AB or BC exam depend solely on the calculator.

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Feb 27, 2012 | Texas Instruments TI-89 Calculator

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I try to install software on a ti-89 and the dimension error when I open the program. Faso also commonly when derived from sin (x) the result is not cos (x) more so, 0.017 cos (x)

I do not know the program you installed, so I will skip the part.
As to the derivative of the sine function, your result is correct if the angle unit is degree.
d(sin(x))/dx = cos(x) is true only if the angle unit is the radian. In degrees, you would have a factor Pi/180 which is 0.174532925. I suggest you consult a calculus book to understand where that factor comes from.

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The sine of ten radians is -0.544021. If you want the sine of ten degrees or of ten grads, press MODE, down-arrow to Angle, press right-arrow, and select the angular mode you want. Press ENTER to save the change.

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I have answered many questions asked by teachers and professors, and very few, if any, deigned to rate the posts. Why do I set myself up for yet another disappointment: I just like to help.

Anyway, the most common source of errors with computation of trigonometric functions is the angle unit. On Ti 83/84Plus (SE) calculators there are two angle units: the degree and the radian.

To verify which angle unit is set as default on a calculator, press MODE. You will see the following screen. The relevant line is the 3rd. On the screen RADIAN is highlighted, meaning that all angle values you feed to trigonometric functions are interpreted as radian measures.
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Set all your calculators to use the angle unit you are using in your teaching, and there will be no unexpected results.

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2) check if button is sticking(not necessarily just the plastic button, but what it hits on the inside... you can clean the contacts on the inside of the calc with a Q-tip and rubbing alcohol.)

I don't have much experience with this specific calculator but those are my best bets.

good luck

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I'm having the same problem:(
I need to solve this urgently, i can't stand always being removing the batteries... please help me!!!

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