Question Number 134839 by SOMEDAVONG last updated on 07/Mar/21 $$\mathrm{Solve}\:,\:\mathrm{S}_{\mathrm{n}} =\:\mathrm{1}+\mathrm{2}×\mathrm{2}+\mathrm{3}×\mathrm{2}^{\mathrm{2}} +\mathrm{4}×\mathrm{2}^{\mathrm{3}} +…+\mathrm{n}×\mathrm{2}^{\mathrm{n}−\mathrm{1}} . \\ $$ Commented by mr W last updated on 07/Mar/21 $${see}\:{Q}\mathrm{134200}…
Question Number 3764 by 123456 last updated on 19/Dec/15 $$\mathrm{if}\:\frac{{df}}{{dx}}={f},\:\mathrm{what}\:\mathrm{are}\:\mathrm{the}\:\mathrm{value}\:\mathrm{of} \\ $$$$\frac{{d}\theta}{{dx}}?\:\left(\mathrm{Q3707}\right) \\ $$ Commented by Filup last updated on 19/Dec/15 $$\mathrm{Attempt}: \\ $$$$ \\…
Question Number 134833 by bramlexs22 last updated on 07/Mar/21 $$\:\int\:\frac{{x}^{\mathrm{3}} −\mathrm{1}}{\mathrm{4}{x}^{\mathrm{3}} −{x}}\:{dx}\:? \\ $$ Answered by bemath last updated on 07/Mar/21 Terms of Service Privacy…
Question Number 3763 by 123456 last updated on 19/Dec/15 $$\mathrm{tan}{f}=\frac{{df}}{{dx}} \\ $$$${f}=? \\ $$ Commented by Filup last updated on 19/Dec/15 $$\frac{{df}}{{dx}}=\mathrm{tan}\:{f} \\ $$$$\int\mathrm{sec}{f}\:{df}={x}+{c} \\…
Question Number 69296 by ozodbek last updated on 22/Sep/19 Commented by Prithwish sen last updated on 22/Sep/19 $$\mathrm{can}\:\mathrm{you}\:\mathrm{post}\:\mathrm{the}\:\mathrm{answer}\:\mathrm{please}? \\ $$ Commented by MJS last updated…
Question Number 69297 by ajfour last updated on 22/Sep/19 Commented by ajfour last updated on 22/Sep/19 $${If}\:{the}\:{graph}\:{is}\:{a}\:{cubic} \\ $$$$\:\:\:\:{y}={x}^{\mathrm{3}} +{ax}^{\mathrm{2}} +{bx}+{c} \\ $$$${find}\:{point}\:{of}\:{intersection}\:{of} \\ $$$${the}\:{red}\:{and}\:{blue}\:{lines}.…
Question Number 134828 by liberty last updated on 09/Mar/21 $$\underset{\mathrm{0}} {\int}^{\:\frac{\pi}{\mathrm{2}}} \frac{\mathrm{sin}\:\left(\frac{\mathrm{2}{x}}{\mathrm{3}}\right)}{\mathrm{tan}\:\left({x}\right)}\:{dx}\:=?\: \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 134831 by abdurehime last updated on 07/Mar/21 $${proof}\:{that}\:{if}\:\mathrm{R}\:\mathrm{is}\:\mathrm{a}\:\mathrm{commetative}\:\mathrm{ring}\:\mathrm{with}\:\mathrm{unity}\:\mathrm{then}\:\mathrm{an}\:\mathrm{ideal}\: \\ $$$$\mathrm{M}\:\mathrm{and}\:\mathrm{R}\:\mathrm{is}\:\mathrm{maximal}\:\mathrm{iff}\:\frac{\mathrm{R}}{\mathrm{M}}\:\mathrm{is}\:\mathrm{a}\:\mathrm{field}. \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 69293 by A8;15: last updated on 22/Sep/19 Commented by MJS last updated on 22/Sep/19 $$\mathrm{great},\:\mathrm{you}'\mathrm{ve}\:\mathrm{been}\:\mathrm{faster}\:\mathrm{than}\:\mathrm{me} \\ $$$$\mathrm{but}\:\mathrm{also}\:{x}=\mathrm{0}\:\mathrm{is}\:\mathrm{a}\:\mathrm{solution} \\ $$ Commented by Rasheed.Sindhi last…
Question Number 134820 by 0731619177 last updated on 07/Mar/21 Answered by Ar Brandon last updated on 07/Mar/21 $$\mathcal{I}=\int_{\mathrm{0}} ^{\mathrm{1}} \int_{\mathrm{0}} ^{\mathrm{1}} \int_{\mathrm{0}} ^{\mathrm{1}} \frac{\mathrm{xyz}}{\left(\mathrm{x}+\mathrm{y}\right)\left(\mathrm{x}+\mathrm{z}\right)\left(\mathrm{z}+\mathrm{y}\right)}\mathrm{dxdydz} \\…