Category: Algebra

Question Number 178867 by Spillover last updated on 22/Oct/22 Answered by Spillover last updated on 15/Jan/23 $$f\left(x\right)=x^4-7x^3+1$$$$requaretoshow$$$${f}\left({x}_{{o}} \right)×{f}\left({x}_{\mathrm{1}} \right)<\mathrm{0}…

Question Number 178818 by Shrinava last updated on 21/Oct/22 $$\mathrm{If}\mathrm{a},\mathrm{b},\mathrm{c},\mathrm{d}\in [1,2]\mathrm{then}\mathrm{prove}\mathrm{that}:$$$$(\mathrm{a}+\mathrm{b}+\mathrm{c}+\mathrm{d}+\mathrm{e})(\frac{1}{\mathrm{a}}+\frac{1}{\mathrm{b}}+\frac{1}{\mathrm{c}}+\frac{1}{\mathrm{d}}+\frac{1}{\mathrm{e}})⩽28$$$$\mathrm{When}\mathrm{equality}\mathrm{holds}?$$ Answered by mr W last updated on 22/Oct/22 $${A}={a}+{b}+{c}+{d}+{e}…

Question Number 178810 by Ib last updated on 21/Oct/22 Commented by ARUNG_Brandon_MBU last updated on 21/Oct/22 Tu peux essayer de rogner l'image la prochaine fois pour améliorer la qualité car là c'est pas si agréable pour la vue. Answered by ARUNG_Brandon_MBU last updated on 21/Oct/22 $${z}=\frac{\mathrm{1}−{e}^{{i}\frac{\pi}{\mathrm{3}}}…

Question Number 178794 by kouameMarcellin last updated on 21/Oct/22 $$i$$$$i$$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 178777 by mr W last updated on 21/Oct/22 $$A=\frac{1}{2018}+\frac{1}{2019}+\dots +\frac{1}{2050}$$$$findtheintegerpartof\frac{1}{A}.$$ Commented by Frix last updated on 21/Oct/22 $$\frac{1}{A}\mathrm{should}\mathrm{be}\mathrm{close}\mathrm{to}\frac{2018+2050}{2\times 33}=61.6363\dots$$$$\Rightarrow\:\mathrm{answer}\:\mathrm{should}\:\mathrm{be}\:\mathrm{61}…