Question about Texas Instruments TI-30 XIIS Calculator

# How do you find the cubed root of a fraction on a calculator

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Press the cubic root key 3Root and enter the fraction enclosed in parentheses. 3Root((a/b))

Posted on Sep 02, 2014

Hi,
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Posted on Jan 02, 2017

SOURCE: HOW TO FIND CUBE ROOT

There is a way to do it. I believe you go into "complex" or "math" buttons. These buttons are yellow on the calculator. Therefore, to access them you must hit "2nd" then the button.

Better yet, you can also get around this dilemma another way. You can enter "the cubed root of x" by raising x to 1/3.

For example the cubed root of x = x^(1/3). It is best to place parentheses around 1/3 so the calculator knows exactly what you mean.

Another example, the "cubed root of (x + 1)" can be entered by:
(x+1)^(1/3) Note the parenteses around both (x+1) and (1/3). This applies if the radical cover both "x" and "1".

Hope this helps.

Posted on Nov 09, 2007

SOURCE: Cube roots

You use the y^x (y to the x) key along with the 2nd function key. That does the opposite operation.

So, let's pick something we know the answer to as an example. How about the cube root of 8? We know 8 = 2 X 2 X 2, so the cube root of 8 will be 2.

Here's how:

8 2nd y^x 3 =

The display will show 2.

The three is the root you want. You can put in any number, with 2 being the square root, 3 the cube root, etc.

Posted on May 17, 2008

To find the cubed root of say...8, then you would type this into the calculator:

root(8,3)

Posted on Nov 13, 2009

SOURCE: cube roots on ti89

The TI-89 has one function to find whatever root you want of a number.

To find the cubed root of say...64, you would type:

root(64,3)

Posted on Nov 14, 2009

To find the cubed root (or any root) of a number, use the root() function.

If you want the cubed root of 125, you would type:

root(125,3)

Posted on Nov 14, 2009

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## Related Questions:

### How do I find the 4th square root of 16 on a datexx ds-700 scientific calculator??

Roots are called as follows:

square root

cube /cubic root

From 4th on, use the ordinal fifth, sixth, ... n-th

To calculate the fourth root you have two possibilities.

1. Some calculators have the x-root key marked with an x followed by the radical symbol. See the screen capture on how to find your result.

Usually the x-root is the SHIFTED function of the general power key that is marked ( [^], [X^y], or [Y^x] ). To use it, you inter the index of the root (the ordinal number). then you press the [SHIFT/2nd/ 2nd] [X^y] sequence and the number whose root you are calculating).

2. Alternatively: Use the equivalence n-th Root (x)=x^(1/n), meaning that to extract the fourth root of 16, you raise 16 to the power of (1/4)

Sep 19, 2014 | DateXX DS-700 - 2 line LCD Display 224...

### How do you calculate the cubed root of a number or 5th root of a number?

For cube roots, use the cube-root function in the MATH menu. For example, to calculate the cube root of 8, press MATH 4 8 =

For other roots (including cube root), use the xth-root function in the MATH menu. For example, to calculate the fifth root of 32, press 5 MATH 4 3 2 =

Mar 02, 2011 | Texas Instruments TI-83 Plus Calculator

### I want to calculate powers on my calculator but am unsure what buttons to press

You have two buttons to calculate powers: The [x^2] calculates the square of a number while the [caret ^] key allows you to calculate any power, be it with integer, fraction or negative exponent.
Both keys are next to one another, one below OPTN and the other below the VARS key.
To calculate roots, you have the square root [SHIFT][x^2] the xroot key [SHIFT] [caret ^] , the CUBE root [SHIFT] [(] , and the inverse key [SHIFT][).

Feb 28, 2011 | Casio FX9750GII Graphic Calculator

### When i type in the cube root i get a decimal answer. i need the radical form of the answer

Configure the calculator to be in MathIO.
Press [Shift][Mode] to open (SetUp) screen.
Select [1:MthIO].

When in this mode, you can still convert a radical/fraction result to decimal by pressing the [S<->D] key.

Feb 10, 2011 | Casio fx-300ES Calculator

### Want to know how to calculate a number raised to a power

Use the general power key marked with X to the y ( look for the image of a key on same line as Power in the screen capture)
You enter a number then press the power key and finally the exponent. If exponent is complicated (fraction, negative or other) enclose the exponent in parentheses.

You aslo have dedicated keys for certain powers and roots (square, square rooot, cube, cubic root)

Jun 09, 2010 | Casio FX-260 Calculator

### Finding a cube root on calculator

You can calculate cube roots by using the cube root function (the 2nd-shift of the 0 key). You can calculate arbitrary roots by using the x-root function (the 2nd-shift of the y^x key, just above the divide key).

May 27, 2010 | Texas Instruments TI-30XA Calculator

### How to use the exponent key on a casio fx 300ES calculator ?

The key to use for the square, and the cube are well marked and they share the same physical key (X to 2) or [SHIFT][X to 2]. Similarly the keys to use for the square root and the cube root share the same physical location (the square root key, to the right of the square key).

For any other exponent, including fractions and negative exponents you use the universal power key labeled [X to ] ( X with a raised square).
1. You enter the base (the number to be raised to a power).
2. You press the [X to ] power key.
3. You close the parenthesis (the right one).
4. You press [=]
Sometimes the result may not be displayed as a decimal number, but as a radical (if you take a root). To make sure it is displayed as a decimal number, in step 4 above, press [SHIFT][=]

Mar 13, 2010 | Casio FX-300W Plus Calculator

### Why does (-64)^(2/3) report an error 2?

Hello,
Certain calculators such as the HP 48G are designed to return the complex principal root for any fractional exponent. Yours appanrently cannot handle complex roots, or is not in complex mode.
To get the real number root, compute the radicand first (-64)^2 using the x^2 key then compute the cube root using the cube root key, if there is one, or the general root key or even the general power key with exponent 1/3.

Hope it helps.
Thank you for using FixYa.

Hope

Nov 18, 2009 | Sharp Office Equipment & Supplies

### How do I cube root a number on my ti89 titanium calculator?

To find the cubed root of say...8, then you would type this into the calculator:

root(8,3)

Nov 02, 2009 | Texas Instruments TI-86 Calculator

### I'm trying to learn how to get a cubed root on my calculator. I've looked up a lot of different ways of doing it.. but what does ^ mean?!

Hello,
If there is no special key reserved for that operation, you can use the raise to an arbitrary power key. This key is represented as [^] ( a caret or accent circonflexe) or [X to the y] or [Y to the x ]. I have just verified : it is primary key accessible directly.
If you want the cube of a number; 2 [^]3 =2x2x2=8.
In your algebra course they must have taught you that the roots of a number (square, cube, fourth, fifth, nth) are equivalents to raising that number to a fractionary power (a power whose exponent is a fraction of the form 1/2 ,1/3, 1/4, 1/5, 1/n etc.)

27[^] (1/3) = cube root of 23 = 3
Hope it helps.

Sep 23, 2009 | Texas Instruments TI-86 Calculator

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