Question Number 145166 by tabata last updated on 02/Jul/21 Commented by tabata last updated on 02/Jul/21 $${help}\:{me}\:{sir} \\ $$ Answered by mathmax by abdo last…
Question Number 145162 by Skabetix last updated on 02/Jul/21 $${we}\:{have}\:{z}\:=\:{e}^{\frac{\mathrm{2}{pi}}{\mathrm{7}}{i}} \: \\ $$$${a}\:=\:{z}+\:{z}^{\mathrm{2}} \:+\:{z}^{\mathrm{4}} \:\:{and}\:{b}\:=\:{z}^{\mathrm{3}} \:+\:{z}^{\mathrm{5}} \:+{z}^{\mathrm{6}} \\ $$$${we}\:{know}\:\:{a}\:+\:{b}\:=\:−\mathrm{1}\:{and}\:\mathrm{1}−{b}={a} \\ $$$${find}\:{S}\:=\:{cos}\left(\frac{\mathrm{2}{pi}}{\mathrm{7}}\right)+\:{cos}\left(\frac{\mathrm{4}{pi}}{\mathrm{7}}\right)\:+\:{cos}\left(\frac{\mathrm{8}{pi}}{\mathrm{7}}\right) \\ $$$${thanks}\:{for}\:{help} \\ $$…
Question Number 14016 by chux last updated on 26/May/17 $$\mathrm{it}\:\mathrm{remains} \\ $$$$\mathrm{force}×\mathrm{distance}=\mathrm{ise} \\ $$ Commented by RasheedSindhi last updated on 27/May/17 $$\mathrm{What}'\mathrm{s}\:\mathrm{ise}? \\ $$ Commented…
Question Number 79532 by naka3546 last updated on 26/Jan/20 $${Given}\:\:{function}\:\:{f}\::\:\mathbb{R}\:\:\Rightarrow\:\:\mathbb{R} \\ $$$$\:\:\:\:\:\:\:\:{x}^{\mathrm{2}} \:{f}\left({x}\right)\:+\:{f}\left(\mathrm{1}\:−\:{x}\right)\:\:=\:\:\mathrm{2}{x}\:−\:{x}^{\mathrm{4}} \\ $$$${f}\left(\mathrm{2019}\right)\:\:=\:\:? \\ $$ Commented by john santu last updated on 26/Jan/20…
Question Number 145057 by 7770 last updated on 02/Jul/21 $$\boldsymbol{{find}}\:\:\boldsymbol{{k}}\:\:\boldsymbol{{if}}\:\boldsymbol{{y}}^{\mathrm{2}} +\boldsymbol{{y}}+\boldsymbol{{k}}\:\boldsymbol{{is}}\:\boldsymbol{{a}}\:\boldsymbol{{perfect}} \\ $$$$\boldsymbol{{square}} \\ $$ Commented by mr W last updated on 02/Jul/21 $${y}^{\mathrm{2}} +{y}+\frac{\mathrm{1}}{\mathrm{4}}=\left({y}+\frac{\mathrm{1}}{\mathrm{2}}\right)^{\mathrm{2}}…
Question Number 145052 by tabata last updated on 01/Jul/21 $${find}\:{laurant}\:{series}\:{at}\:{f}\left({z}\right)=\frac{\mathrm{1}}{{lnz}}???? \\ $$ Commented by tabata last updated on 01/Jul/21 $$????? \\ $$ Commented by Olaf_Thorendsen…
Question Number 145004 by tabata last updated on 01/Jul/21 Commented by tabata last updated on 01/Jul/21 $${help}\:{me}\:{sir}\:{please} \\ $$ Terms of Service Privacy Policy Contact:…
Question Number 144890 by nimnim last updated on 30/Jun/21 Commented by nimnim last updated on 30/Jun/21 $$\mathrm{please}\:\mathrm{help}.. \\ $$ Answered by ajfour last updated on…
Question Number 144875 by lapache last updated on 30/Jun/21 Answered by Dwaipayan Shikari last updated on 30/Jun/21 $$\frac{\mathrm{1}}{{n}!}\int_{\mathrm{0}} ^{\infty} {x}^{{n}} \mathrm{sin}\:\left({x}\right){e}^{−{x}} {dx} \\ $$$$=\frac{\mathrm{1}}{\mathrm{2}{in}!}\int_{\mathrm{0}} ^{\infty}…
Question Number 144872 by phally last updated on 30/Jun/21 Terms of Service Privacy Policy Contact: info@tinkutara.com