Question Number 80813 by mathmax by abdo last updated on 06/Feb/20 $${calculate}\:\sum_{{n}=\mathrm{2}} ^{\infty} \:\frac{\xi\left({n}\right)−\mathrm{1}}{{n}}\:\:\:{with}\:\xi\left({x}\right)=\sum_{{n}=\mathrm{1}} ^{\infty} \:\frac{\mathrm{1}}{{n}^{{x}} }\:\:\:\left({x}>\mathrm{1}\right) \\ $$ Answered by mind is power last…
Question Number 80815 by mathmax by abdo last updated on 06/Feb/20 $${find}\:{nsture}\:{of}\:{the}\:{serie}\:\sum_{{n}=\mathrm{0}} ^{\infty} \left(\mathrm{1}+{sin}\left({n}\right)\right)^{\frac{\mathrm{1}}{{n}}} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 15262 by Tinkutara last updated on 08/Jun/17 $$\mathrm{Solve}\::\:{x}^{\mathrm{2}} \:−\:\mathrm{6}{x}\:+\:\left[{x}\right]\:+\:\mathrm{7}\:=\:\mathrm{0}. \\ $$ Commented by ajfour last updated on 08/Jun/17 $$\left({x}−\mathrm{3}\right)^{\mathrm{2}} =\mathrm{2}−\left[{x}\right] \\ $$$${No}\:{solution}\:. \\…
Question Number 146260 by mathmax by abdo last updated on 12/Jul/21 $$\mathrm{solve}\:\mathrm{y}^{''} −\mathrm{2y}^{'} \:+\mathrm{y}\:=\mathrm{e}^{−\mathrm{x}} \mathrm{sinx} \\ $$ Answered by qaz last updated on 12/Jul/21 $$\mathrm{y}_{\mathrm{p}}…
Question Number 146193 by mathmax by abdo last updated on 11/Jul/21 $$\mathrm{solve}\:\mathrm{y}^{''} \:−\mathrm{y}^{'} \:+\:\mathrm{y}=\mathrm{xe}^{−\mathrm{x}} \\ $$ Answered by qaz last updated on 12/Jul/21 $$\mathrm{y}_{\mathrm{p}} =\frac{\mathrm{1}}{\mathrm{D}^{\mathrm{2}}…
Question Number 146196 by mathmax by abdo last updated on 11/Jul/21 $$\mathrm{calculate}\:\int_{\mathrm{0}} ^{\infty} \:\:\:\frac{\mathrm{dx}}{\left(\mathrm{2x}+\mathrm{1}\right)^{\mathrm{4}} \left(\mathrm{x}+\mathrm{3}\right)^{\mathrm{5}} } \\ $$ Answered by mathmax by abdo last updated…
Question Number 146197 by mathmax by abdo last updated on 11/Jul/21 $$\mathrm{calculate}\:\int_{−\infty} ^{+\infty} \:\frac{\mathrm{dx}}{\left(\mathrm{x}^{\mathrm{2}} −\mathrm{x}+\mathrm{1}\right)^{\mathrm{3}} } \\ $$ Answered by Olaf_Thorendsen last updated on 12/Jul/21…
Question Number 146194 by mathmax by abdo last updated on 11/Jul/21 $$\mathrm{calculate}\:\sum_{\mathrm{n}=\mathrm{1}} ^{\infty} \:\frac{\mathrm{1}}{\mathrm{n}^{\mathrm{3}} \mathrm{5}^{\mathrm{n}} } \\ $$ Answered by qaz last updated on 12/Jul/21…
Question Number 15093 by Tinkutara last updated on 07/Jun/17 $$\mathrm{The}\:\mathrm{range}\:\mathrm{of}\:{f}\left({x}\right)\:=\:\frac{\left\{{x}\right\}^{\mathrm{2}} \:−\:\left\{{x}\right\}\:+\:\mathrm{1}}{\left\{{x}\right\}^{\mathrm{2}} \:+\:\left\{{x}\right\}\:+\:\mathrm{1}}; \\ $$$$\left(\mathrm{where}\:\left\{\centerdot\right\}\:\mathrm{denotes}\:\mathrm{fractional}\:\mathrm{function}\right) \\ $$$$\mathrm{is}? \\ $$ Answered by mrW1 last updated on 07/Jun/17…
Question Number 15094 by Tinkutara last updated on 07/Jun/17 $$\mathrm{Number}\:\mathrm{of}\:\mathrm{integers}\:\mathrm{in}\:\mathrm{the}\:\mathrm{range}\:\mathrm{of} \\ $$$${y}\:=\:\frac{\mathrm{7}^{{x}} \:−\:\mathrm{7}^{−{x}} }{\mathrm{7}^{{x}} \:+\:\mathrm{7}^{−{x}} }\:\mathrm{are}? \\ $$ Answered by mrW1 last updated on 07/Jun/17…