Question about Texas Instruments TI-86 Calculator

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Cube root 27:

Put 3 then

Select 2nd MATH MISC MORE F4 27 ENTER

should equal 3.

Posted on Jun 05, 2009

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Posted on Jan 02, 2017

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Sorry, but the fx-115ES can only display square roots in radical form. Cube roots are beyond its symbolic capabilities and will always be in decimal form.

Mar 08, 2013 | Texas Instruments TI-86 Calculator

If you mean 6 plus cube root of 2 then press

6 + 2 2nd [cube-root] =

The cube root is the shifted function of the 0 key.

6 + 2 2nd [cube-root] =

The cube root is the shifted function of the 0 key.

Dec 03, 2012 | Texas Instruments TI-30XA Calculator

If you mean the cube root of 8, press

MATH 4 8 ENTER

and you will get 2.

If you're trying to calculate something else or using a different key sequence, please reply to this post and give further details.

MATH 4 8 ENTER

and you will get 2.

If you're trying to calculate something else or using a different key sequence, please reply to this post and give further details.

May 18, 2012 | Texas Instruments TI-83 Plus Calculator

It can handle square root but if result requires too much display space it will be displayed as a decimal.As to higher order roots such as cube , 4th and higher they are displayed as decimal. Sorry, there is nothing you can do about it.

Apr 18, 2012 | Casio fx-300ES Calculator

On most calculators with a solver function, you can specify a starting value for the variable (in this case x) after pressing [Solve] but before pressing the = key.

To get the three solutions, try entering the function, pressing [Solve] then an estimated starting point (say 0.5 or 0.7) then [=]. This should show the +root2/2 result (ie 0.7071067812).

You should not need to enter the function again.

Follow this by pressing [Solve] again, then another estimated starting point (say -0.5 or -0.7) then [=] to get the -root2/2 result.

Similarly, then press [Solve] again, and enter another estimated starting point (say -2) then [=] to get the final solution of -3.

On Casio calculators, the [Solve] function is usually found by pressing [Shift][Calc]. Note that the solver function generally won't return numbers in surd form, only as a decimal value.

To get the three solutions, try entering the function, pressing [Solve] then an estimated starting point (say 0.5 or 0.7) then [=]. This should show the +root2/2 result (ie 0.7071067812).

You should not need to enter the function again.

Follow this by pressing [Solve] again, then another estimated starting point (say -0.5 or -0.7) then [=] to get the -root2/2 result.

Similarly, then press [Solve] again, and enter another estimated starting point (say -2) then [=] to get the final solution of -3.

On Casio calculators, the [Solve] function is usually found by pressing [Shift][Calc]. Note that the solver function generally won't return numbers in surd form, only as a decimal value.

Jul 07, 2011 | Office Equipment & Supplies

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.

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

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).

For any other exponent, including fractions and negative exponents you use the universal power key labeled [X to ] ( X with a raised square).

- You enter the base (the number to be raised to a power).
- You press the [X to ] power key.
- You close the parenthesis (the right one).
- You press [=]

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

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.

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.

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

Hope it helps.

Sep 13, 2009 | Texas Instruments TI-86 Calculator

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

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

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.

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.

Oct 03, 2007 | Texas Instruments TI-86 Calculator

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