Question about Texas Instruments TI-89 Calculator

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The @ sign

In some calculations i've done, maybe with integral with sin and cos stuff. i would get a @ sign along with the answer. what is it?
an example would be in this picture

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The picture link didn't work for me... and seeing as you asked in August of 2008, I'm certain you don't need this answer, but here you go...

According to the TI-89 Guidebook:

This notation indicates an “arbitrary integer” that represents any integer. When an arbitrary integer occurs multiple times in the same session, each occurrence is numbered consecutively. After it reaches 255, arbitrary integer consecutive numbering restarts at @n0.

This notation indicates an “arbitrary constant” that represents any integer. When an arbitrary constant occurs multiple times in the same session, each occurrence is numbered consecutively. After it reaches 255, arbitrary integer consecutive numbering restarts at @0.

So it's the same concept, just a little different. It all depends if it is shown as @n1 or @1 where 1 can be any integer to 255

Hope this helps

Posted on Jan 30, 2009

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A mild advice: Avoid writing function without specifying the argument (the variable on which a function acts).


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