Question and Answers Forum

All Questions      Topic List

Algebra Questions

Previous in All Question      Next in All Question      

Previous in Algebra      Next in Algebra      

Question Number 43544 by behi83417@gmail.com last updated on 11/Sep/18

Answered by MJS last updated on 12/Sep/18

$$x=z-\frac{1}{3}$$$$z^3-\frac{1}{3}z+\frac{2}{27}-\frac{\sqrt{2}}{10}=0$$$$\mathrm{trigonometric}\mathrm{solution}\mathrm{method}$$$$z_k=2\sqrt{-\frac{p}{3}}\sin (\frac{2\pi k}{3}+\frac{1}{3}\arcsin \left(\frac{9q}{2p^2}\sqrt{-\frac{p}{3}}\right))$$$$x_k=z_k-\frac{1}{3}$$$$x_1\approx .326514$$$$x_2\approx -.745626$$$$x_3\approx -.580888$$

Commented by behi83417@gmail.com last updated on 12/Sep/18

$$thanksinadvancesir.$$

Terms of Service

Privacy Policy

Contact: info@tinkutara.com