Category: Relation and Functions

Question Number 50360 by prof Abdo imad last updated on 16/Dec/18 $$findradiusofconvergencefortheserie$$$$\sum _{n=0}^{\mathrm{\infty }}\{{(1+i)}^n-{(1-i)}^n\}{x}^n$$ Terms of Service Privacy Policy…

Question Number 115854 by bemath last updated on 29/Sep/20 $$Iff\left(2x\right)=x^2+4x+1,whatall$$$$valuesoftforwhichf\left(\frac{t}{2}\right)=-\frac{11}{4}$$$$wherefrepresentsafunction$$ Answered by bobhans last updated on 29/Sep/20 $$\:\Leftrightarrow\:{f}\left({x}\right)=\:\left(\frac{{x}}{\mathrm{2}}\right)^{\mathrm{2}}…

Question Number 49983 by Tawa1 last updated on 12/Dec/18 $$\mathrm{Find}\mathrm{the}\mathrm{domain}\mathrm{of}\mathrm{the}\mathrm{function}\mathrm{and}\mathrm{sketch}\mathrm{the}\mathrm{graph}$$$$\mathrm{f}\left(\mathrm{x}\right)=\{\begin{array}{l}2\mathrm{x}-1,\mathrm{if}\mathrm{x}<0\\ {\mathrm{x}}^2,\mathrm{if}0⩽\mathrm{x}⩽2\\ 1,\mathrm{if}\mathrm{x}⩽2\end{array}$$ Answered by kaivan.ahmadi last updated on 15/Dec/18 $$\mathrm{this}\mathrm{is}\mathrm{not}\mathrm{a}\mathrm{function}\mathrm{since}\mathrm{f}(0.5)=0.25\mathrm{for}\mathrm{f}\left(\mathrm{x}\right)={\mathrm{x}}^2$$$$\mathrm{and}\:\mathrm{f}\left(\mathrm{0}.\mathrm{5}\right)=\mathrm{1}\:\mathrm{for}\:\mathrm{f}\left(\mathrm{x}\right)=\mathrm{1}.…

Question Number 115489 by ruwedkabeh last updated on 26/Sep/20 $$findrangefor$$$$1.f\left(x\right)=\frac{\sqrt{x^2-9}}{x-1}$$$$2.f\left(x\right)=\ln \left(\sqrt{4-9x^2}\right)$$ Answered by PRITHWISH SEN 2 last updated…

Question Number 49937 by turbo msup by abdo last updated on 12/Dec/18 $$let{u}_n=\frac{{(-1)}^n}{2^n}+3n+1$$$$find\sum _{n=0}^{49}{u}_n$$ Commented by Abdo…