Category: Relation and Functions

Question Number 134630 by mathmax by abdo last updated on 06/Mar/21 $$\mathrm{find}\mathrm{the}\mathrm{sequence}{\mathrm{u}}_{\mathrm{n}}\mathrm{wich}\mathrm{verify}{\mathrm{u}}_{\mathrm{n}}+{\mathrm{u}}_{\mathrm{n}+1}=\mathrm{cosn}$$ Answered by mathmax by abdo last updated on…

Question Number 68872 by mathmax by abdo last updated on 16/Sep/19 $$solve(x^3+1)y^{{}^{\prime }}+(2x+3)y=xcos\left(2x\right)$$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Question Number 68871 by mathmax by abdo last updated on 16/Sep/19 $$letf\left(x\right)=e^{-arctan\left(\frac{2}{\sqrt{x^2+1}}\right)}$$$$1)calculate{f}^{{}^{\prime }}\left(x\right)$$$$2)givetheequationoftangentetograph{C}_{f}atpointA(1,f\left(1\right))$$ Terms of Service…

Question Number 134169 by liberty last updated on 28/Feb/21 $$\mathrm{Find}\mathrm{the}\mathrm{number}\mathrm{of}\mathrm{integers}$$$$\mathrm{satisfying}\mid \mid \mathrm{x}-5\mid -21\mid =\mid {\mathrm{x}}^2-10\mathrm{x}+4\mid$$ Answered by mr W last updated on 28/Feb/21 $$\mid\mid{x}−\mathrm{5}\mid−\mathrm{21}\mid=\mid\mid{x}−\mathrm{5}\mid^{\mathrm{2}} −\mathrm{21}\mid…

Question Number 68593 by Abdo msup. last updated on 14/Sep/19 $$calculate\sum _{n=1}^{\mathrm{\infty }}\frac{{(-1)}^n}{n{(2n+1)}^2}$$ Commented by Abdo msup. last updated on 06/Oct/19…