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How do i enter cube root on the ti86 - Texas Instruments TI-86 Calculator

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In the MATH MISC menu you'll find the xth-root function. Use this to find the 3rd root.

3 xth-root 8 ENTER will give 2.

Posted on Sep 13, 2010

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SOURCE: entering a cubed root into a ti-83 plus

math button and there is a symbol for cubed root

Posted on Aug 26, 2008

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SOURCE: how do i find the cube root on ti86

Raise the number to the one-third power.

For example, ( [-] 8 ) ^ ( 1 / 3 ) ENTER gives negative 2.

Posted on Jan 23, 2010

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Cube roots


The TI-89 does not have a cube root function. However, you can calculate any root simply by raising to the reciprocal of the power. For example, to calculate the cube (third) root of 125, press
5 ^ ( 1 / 3 ) ENTER

Nov 03, 2011 | Texas Instruments TI-89 Calculator

1 Answer

How do i use the cube root function? i can find the square root function, but at present it does not seem that the calculator has a cube root function.


There's a cube root function as the fourth item in the MATH menu. The fifth item is a general root function.

For example, to calculate the cube root of 8, press MATH 4 8 ENTER

Feb 21, 2011 | Texas Instruments TI-84 Plus Calculator

1 Answer

I'm trying to find the cube root of 64 on my TI-30x ii s. I'm just trying to find out how to enter the root on the calculator


Enter the number 3 then hit 2nd button then the ^ button(cubed root), enter the number under the radical sign then enter.

Jul 12, 2010 | Texas Instruments TI-30 XIIS Calculator

1 Answer

The TI-84 Plus Silver Edition - when dealing with roots and powers - how do you punch in the third root of or the fourth root of... also, how do you punch in ...the 3rd root of 8 cubed? or the 2nd root of...


Press the MATH key to bring up the Math menu. Option 3 gives you cubed, option 4 gives you cube root, option 5 gives you nth root.

For example, 3rd root of 8: MATH 4 8 ENTER gives 2.

4th root of 16: 4 MATH 5 16 ENTER gives 2.

Apr 01, 2010 | Texas Instruments Office Equipment &...

2 Answers

I need to know how to enter anything above cube root into my TI-83.


  1. Use the universal power key marked with [^].
  2. To avoid problems if the exponent is an expression, enclose it in parentheses.
  3. To enter any power type number^(exponent)
  4. If exponent is negative use the (-) change sign key next to the dot, below the 3 key.
  5. To calculate the roots (cubic, fourth, fifth, etc.) roots use the fact that a root of n-th order can be represented as ^(1/n)
  6. Ex: cube root of 27: 27^(1/3); square root of 64 : 64^(1/2) or 64^(0.5)

Feb 26, 2010 | Texas Instruments TI-83 Plus Calculator

1 Answer

How do i find the cube root on ti86


Raise the number to the one-third power.

For example, ( [-] 8 ) ^ ( 1 / 3 ) ENTER gives negative 2.

Jan 23, 2010 | Texas Instruments TI-86 Calculator

1 Answer

How to find cube root.


Hello,
What we call roots: square, cube ,fourth roots, etc. can be shown in algebra to be equiavlent to powers with fractionary exponents where numerator is 1 and denomonator an integer.
square root of a = a to the power 1/2
cube root of a = a to the power 1/3
n-th root of a = a raised to the power 1/n, n integer different from 0.

How to use calculator to calculate cube root?
If you do not have a specific (shortcut) key for it you use the key to raise to an arbitrary power [^ ], sometimes shown as [x^y]. The exponent will be 1/3. Do not replace 1/3 by its decimal approximate.

Cube root of 27 is entered as 27 [^ ] (1/3)

Hope it helps.

Sep 13, 2009 | Texas Instruments TI-86 Calculator

1 Answer

Cube roots or higher


If you want to take the nth root, enter the root first then press math 5 and then the number you are trying to take the root of.  For example to take the 4th root of 1000, press 4, math, 5, 1000, enter.

Jan 29, 2009 | Texas Instruments TI-83 Plus Calculator

3 Answers

Entering a cubed root into a ti-83 plus


You can enter any root by typing the number, then hitting MATH and 5, which brings up the root symbol with the x in front of it: x√. So the fifth-root would be 5 -> MATH -> 5 and then whatever number you want to get the fifth-root for: 5x√10 for example. As someone else had mentioned, you can also raise it to a rational power: 3^(1/3) which would be the same as the cubed root of 3, but you could also type: 3 -> MATH -> 5 -> 3 and get the same answer, but looking like this in your calculator: 3x√3. The option for 4 actually is a predefined cubed-root, and the one for option 5 there is the root symbol that can be used with any number before it to get any root you want. There are no parenthesis as you get when using the predefined square-root and cubed-root functions, though, so you may want to type them in yourself if entering a long string of operations in the calculator at one time to make sure the calculator doesn't include numbers under the root that you don't want it to. But I guess it depends on preference in terms of what method you choose between the rational exponents or the root symbol (and most would go with whichever seems easiest and quickest to enter), but you asked specifically how to get the cubed-root on the TI-83 Plus, so there's my best attempt at answering your question.

Aug 22, 2008 | Texas Instruments TI-83 Plus Calculator

3 Answers

How do I solve radical expression and equations using the TI89?


1. square of 12
2. cube root of 48 a raise to 5 y raise to 6
3. square root of 128 y raise to 5
4. 6th root of 9 y raise to 2
5. cube root of 24 y raise to 5
6. 10th root of 32 x raise to 5
7. 15th root of 64 x raise to 9
8. 4th root of 10000
9. cube root of 192 p raise to 5
10. cube root of 256 y raise to 12

Jul 04, 2008 | Texas Instruments TI-89 Calculator

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