How do I do a cube root on a TI-89 Titanium? or even a fourth root for that matter?
How can I calculate the cube root on a TI-89 Titanium calculator? Additionally, I would like to know how to compute a fourth root as well. Thank you!
9 Answers
The most straightforward way of finding a fourth root is to take the square root of the square root.
For roots in general, remember that the nth root is the same as the (1/n)th power. So to take the cube root of 29, raise 29 to the 1/3 power. You may have to put the power expression in parentheses: 29 ^ (1/3) [enter].
Good luck!
Feb 11, 2025
This Site Might Help You.
RE:
How do I do a cube root on a TI-89 Titanium? or even a fourth root for that matter?
Feb 08, 2025
Under the MATH menu as mentioned (2nd, 5). Go to 1. Number, and D. Root. This will allow you to enter the number or input, comma then root power.
Ex. Root(8,3) will give you cube root of 8.
Shortcut to root input is DIAMOND then 9.
Hope that helps anyone still looking. This is still on ti-89 platinum.
the quickest way is to hit the diamond key and then hit 9 which will bring up- root√(
first enter the number, then a comma- , and then the root, then closing bracket- ). for instance, the cubed root of 8 should be entered like this- root√(8,3)
use the "^" button and make a fraction
ex: say you want the cubic root of 125
enter: 125^(1/3)
then press "enter"
to get:
125^(1/3) = 5
ta da!
Under the "MATH" list (2nd, 5) you should find a ³√ and a x√
the x√ can be used to find the anything root.
if you want to find the 4th root, type in a 4 and then enter the x√
Feb 16, 2025
Put in number you want to raise your power to then press ^ for the power you want to achieve. E.g., 12^6. The website can be a great help also.
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