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exon111
Joined: 03 Oct 2006
Posts: 6
Location: OC, CA, USA
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 Posted: January 11, 2007 1:29 AM Post subject: How can I enter cubed root into the Ti-89? |
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Does anyone know how to get the cube root of a number on the Ti-89 Titanium? I'm guessing there must be some way because even the most basic texas instuments calculators have a button for it, but I can't figure it out on my TI-89. I looked in the manual but to no avail.
Thanks,
exon11
_________________
"Expect my questions to be basic and stupid, I'm only in high school algebra 2 and I am bad at math  " |
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hendonj
Joined: 12 Jan 2007
Posts: 1
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| Posted: January 12, 2007 9:49 AM Post subject: |
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raise it to 1/3...
ex. x^1/3= cuberoot of x |
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bigger
Joined: 06 Jan 2007
Posts: 7
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| Posted: January 16, 2007 9:48 AM Post subject: |
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| Or use the root command: root(3,3) is 3 in the 3rd root. |
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baseballdude_
Joined: 20 Sep 2006
Posts: 76
Location: Wisconsin
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| Posted: January 17, 2007 2:45 PM Post subject: |
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| bigger wrote: | | Or use the root command: root(3,3) is 3 in the 3rd root. |
Exactly, this is your best answer. The first argument is what you want to find the root of and the second argument is which root. |
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bostonvaulter
Joined: 13 Oct 2006
Posts: 43
Location: USA
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| Posted: January 27, 2007 1:28 PM Post subject: |
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| if you raise it to the 1/3 you have to make sure you don't forget the parentheses. So it would be x^(1/3). Also, if you can only use root if you have a TI-89 Titanium, it is not included on the regular TI-89s. |
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