Category: Relation and Functions

Question Number 42689 by prof Abdo imad last updated on 31/Aug/18 $$letf\left(x\right)=\frac{x}{x^3-2x+1}$$$$1)find{D}_f$$$$2)find{f}^{\left(n\right)}\left(x\right)then{f}^{\left(n\right)}\left(0\right)$$$$3)developpfatintegrserie.$$ Commented by…

Question Number 108193 by bemath last updated on 15/Aug/20 $$\frac{\mathrm{♡}\mathcal{B}e\mathcal{M}ath\mathrm{♡}}{⧫}$$$$Given2f\left(x\right)+3f\left(\frac{1}{x}\right)=2x+3$$$$findf\left(3\right)?$$ Commented by bemath last updated on 15/Aug/20 $${thank}\:{you}\:{both} \…

Question Number 42508 by maxmathsup by imad last updated on 26/Aug/18 $$findthevalueof$$$$A=cos\left(\frac{\pi }{5}\right).cos\left(\frac{2\pi }{5}\right)cos\left(\frac{4\pi }{5}\right)andB=sin\left(\frac{\pi }{5}\right)sin\left(\frac{2\pi }{5}\right)sin\left(\frac{4\pi }{5}\right).$$ Answered by math1967 last updated on 27/Aug/18 $${let}\frac{\pi}{\mathrm{5}}=\theta\:\:\therefore\mathrm{4}\theta=\pi−\theta \…

Question Number 42492 by maxmathsup by imad last updated on 26/Aug/18 $$letx>0,y>0,z>0provethat\frac{x^2}{yz}+\frac{y^2}{xz}+\frac{z^2}{xy}⩾3.$$ Answered by tanmay.chaudhury50@gmail.com last updated on 26/Aug/18 $$\frac{{x}^{\mathrm{3}}…

Question Number 42463 by abdo.msup.com last updated on 26/Aug/18 $$lety=\sqrt{x+\sqrt{x+\sqrt{x+2}}}$$$$calculate\frac{dy}{dx}$$ Commented by maxmathsup by imad last updated on 26/Aug/18 $${we}\:{have}\:{y}^{\mathrm{2}} \:={x}+\sqrt{{x}+\sqrt{{x}+\mathrm{2}}\:}\:\:\Rightarrow\left({y}^{\mathrm{2}}…