Category: Relation and Functions

Question Number 52678 by maxmathsup by imad last updated on 11/Jan/19 $$let{u}_n=ln\left\{cos\left(2^{-n}\right)\right\}calculate\sum _{n=0}^{\mathrm{\infty }}{u}_n$$ Commented by Abdo msup. last updated on…

Question Number 52673 by maxmathsup by imad last updated on 11/Jan/19 $$letf\left(x\right)=(x^n-1)e^{x}determine{f}^{\left(n\right)}\left(x\right)withnintegrnatural$$ Commented by maxmathsup by imad last updated on…

Question Number 52669 by maxmathsup by imad last updated on 11/Jan/19 $$let{S}_n\left(p\right)=\sum _{k=0}^n{k}^p$$$${prove}\:{that}\:{S}_{{n}} \left({p}\right)=\frac{\mathrm{1}}{{p}+\mathrm{1}}\left\{\:\left({n}+\mathrm{1}\right)^{{p}+\mathrm{1}} \:−\sum_{{k}=\mathrm{0}} ^{{n}−\mathrm{1}} \:{C}_{{p}+\mathrm{1}} ^{{k}} \:{S}_{{n}} \left({k}\right)\right\} \…

Question Number 183712 by Michaelfaraday last updated on 29/Dec/22 $$solve:$$$$W\left(In\left(4x\right)\right)=\sqrt{(x-1)}$$ Answered by mr W last updated on 29/Dec/22 $${e}^{\mathrm{ln}\:\left(\mathrm{4}{x}\right)} \mathrm{ln}\:\left(\mathrm{4}{x}\right)=\sqrt{{x}−\mathrm{1}} \…

Question Number 117857 by bemath last updated on 14/Oct/20 $$\mathrm{Let}\mathrm{n}\in \mathbb{N}.\mathrm{Find}\mathrm{the}\mathrm{number}\mathrm{of}$$$$\mathrm{polynomials}\mathrm{p}\left(\mathrm{x}\right)\mathrm{with}\mathrm{coefficients}$$$$\mathrm{in}\{0,1,2,3\}\mathrm{such}\mathrm{that}\mathrm{p}\left(2\right)=\mathrm{n}$$ Answered by mindispower last updated on 14/Oct/20 $${let}\:{p}\left({x}\right)=\underset{{k}\leqslant{n}} {\sum}{a}_{{k}}…