cube
## Cube Root on the TI-83plus and TI-84 family of Calculators

in this video we're going to take a look

at calculating the cube root of a number

using the ti-83 plus and the ti-84

families of calculators

most graphing calculators are fairly

close to the same and so if you follow

this you'll probably pick up if you use

a scientific you usually have to put the

number the radicand in first and then

press the the appropriate button but

here we go to access the cube root

function what we need to do is we need

to go into the math menu so we're going

to press the math button and you'll see

option 4 contains the cube root of and

so we can eat either press 4 or we can

scroll down and press ENTER and that's

going to activate the cube root you'll

see the little 3 out in front after that

we simply put in our radicand which is

this number right here

this is our radicand the three is our

index and so we've already got that

index in there and we have the radicand

we just press ENTER and that gives us

that gives us our answer so the cube

root of 64 is 4 now unlike square roots

the cube root of negative numbers are

negative

there's no imaginary roots and so we

look at this and we say ok well let's go

into or go press our math button and we

scroll down or press number 4 if you

press number 4 it will automatically

select it and boot you back to the home

screen put in negative 5 making sure to

use the negative sign not the minus sign

press ENTER and there's your answer and

again if it's not perfect then it's

going to be an irrational number and

therefore you're going to get an

infinite number of decimals and they're

not going to repeat

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