successive approximation
guess ... test ... adjust ... repeat
HELP ME PLZ
Hello, I need to ask a question
How do you find cube root? But explain it plz
3 answers
easy way: use your calculator
No cube root button? If you have an x^y button, then
cube root is the 1/3 power. So, to find the cube root of 8,
hit 8, then x^y and then (1/3)
If yopu have learned about logarithms, you can also use the fact that
log(x^n) = n*log(n)
and
10^(logx) = x
So, since cube root is the 1/3 power,
∛x = 10^(1/3 logx)
You can also extract roots of any order by hand. I learned how to do it when I was in the 9th grade. All I had was an example, and it took me three hours to figure it out. These days, there are online videos and examples to show how it's done. It's just an extension of long division, which is basically a guessing game where you do it one digit at a time. Good luck and have fun.
No cube root button? If you have an x^y button, then
cube root is the 1/3 power. So, to find the cube root of 8,
hit 8, then x^y and then (1/3)
If yopu have learned about logarithms, you can also use the fact that
log(x^n) = n*log(n)
and
10^(logx) = x
So, since cube root is the 1/3 power,
∛x = 10^(1/3 logx)
You can also extract roots of any order by hand. I learned how to do it when I was in the 9th grade. All I had was an example, and it took me three hours to figure it out. These days, there are online videos and examples to show how it's done. It's just an extension of long division, which is basically a guessing game where you do it one digit at a time. Good luck and have fun.
cube root of a number = the number raised to the 3rd power:
cube root of 27 = 27^(1/3) = 3. Use calculator.
Check: 3^3 = 3*3*3 = 27.
cube root of 27 = 27^(1/3) = 3. Use calculator.
Check: 3^3 = 3*3*3 = 27.
0 answers