Take the 2-minute tour ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.

One wants to approximate the real value of $\sqrt[3]{x}$ when $x$ is rational number. One want to approximate to two decimal digits.

Is there any way to do this quickly?

share|improve this question
2  
Did you study Taylor polynomial? en.wikipedia.org/wiki/… –  Dennis Gulko Oct 14 '12 at 6:05
    
Got it. thanks. –  W12 Oct 14 '12 at 6:11
1  
Another way is to use Newton's method. –  Robert Israel Oct 14 '12 at 8:23
    
Another way is to use a calculator. –  Gerry Myerson Oct 14 '12 at 8:34
    
Another way is to compute the continued fraction. –  PAD Oct 14 '12 at 8:35

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.