Question about Texas Instruments TI-89 Calculator

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Abs( and square roots

Whenever i try graphing absolute values or square rooting a number in home i get a missing error, does that mean i need to download it from somewhere and if yes, where?
and if not how do i fix it. I tried restoring it and everything and i've been so lost in class since my calculator keeps giving me this error.
Please help.

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1 Answer

The missing error means that you did not close the parenthesis. When you use a square root or absolute value it always gives you the left parenthesis, (, but you need to close it with a right parenthesis, )

Posted on Oct 09, 2008

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2 Answers

Anyone know how I can do Absolute Value on this?


The quick way to determine absolute value is to square the value and take the square root of that.
So on the TI, with the value on-screen, just push these 2 keys in sequence (they are right next to each other):
25729793-pa02kysejofs3imjlxoep0yt-4-0.jpg25729793-pa02kysejofs3imjlxoep0yt-4-1.jpg

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What is x2,x/1,x! andsquare root symbol means and their value?


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Why does the TI-nspire not give complete graphs of cube root and other franctional power functions?


I do not see why it would do that. Maybe you restricted the domain to positive values of the independent variable.
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By the way the cube root is made up of one branch only, not 2 like the square root.
Here is a screen capture.

11_7_2012_1_19_42_am.png

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1 Answer

Everytime I try to do powers and square roots I get an error message


An ERR: MEMORY is given when there is not enough memory to perform the instruction or function. To increase available memory by deleting the contents of any variable (real or complex number, list, matrix, Y= variable, program, Apps, AppVars, picture, graph database, or string), follow these steps. • Press [2nd] [MEM] to display the MEMORY menu.
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Can I use the HP 12c to figure out square roots of numbers


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(-1)^(2/3) is a math four error... why?


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3_16_2012_6_22_00_pm.jpg


For better understanding this problem noticed the graph of the function y=x^(2/3) below


3_16_2012_6_26_10_pm.jpg

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1 Answer

Square root


It may be that you have somehow changed to a 'mode' that only shows integer values.

Try pressing the green button, then 5, then 9. Then try the calculation again.

If this fails, you can use Google as a calculator - search Google for sqrt(0.4053) and see what happens.. :-)

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The calculator is only graphing a half circle when it should be a full circle, specifically not in the negative y-values of the plane.


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I need to use the square root sign but I need to square root with 3, 4, and so on.


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