Question Number 170262 by alcohol last updated on 19/May/22 $${I}_{{n}} \:=\:\int_{\mathrm{0}} ^{\:\mathrm{1}} {x}^{{n}} \sqrt{\mathrm{1}−{x}^{\mathrm{2}} }\:{dx} \\ $$$${show}\:{that}\:\left({n}+\mathrm{1}\right){I}_{{n}} \:=\:\left({n}+\mathrm{4}\right){I}_{{n}+\mathrm{2}} \\ $$ Terms of Service Privacy Policy…
Question Number 104727 by bemath last updated on 23/Jul/20 $$\mathcal{G}{iven}\:{x}\:+\:\frac{\mathrm{1}}{{x}}\:=\:\mathrm{2cos}\:\theta \\ $$$${find}\:{x}^{{n}} +\frac{\mathrm{1}}{{x}^{{n}} }\:=\:? \\ $$ Commented by bemath last updated on 23/Jul/20 $${thank}\:{you}\:{all} \\…
Question Number 104576 by bemath last updated on 22/Jul/20 $$\mathrm{2sin}\:\mathrm{2}{x}\:−\mathrm{4sin}\:^{\mathrm{2}} {x}\:=\:\mathrm{7cos}\:\mathrm{2}{x} \\ $$$${with}\:\frac{\pi}{\mathrm{2}}<\:{x}\:<\:\pi\: \\ $$$${find}\:\mathrm{sin}\:\mathrm{2}{x}\: \\ $$ Commented by bemath last updated on 22/Jul/20 $${thank}\:{you}\:{both}…
Question Number 39028 by maxmathsup by imad last updated on 01/Jul/18 $$\left.\mathrm{1}\right)\:{calculate}\:\:{A}={cos}\left(\frac{\pi}{\mathrm{7}}\right).{cos}\left(\frac{\mathrm{2}\pi}{\mathrm{7}}\right).{cos}\left(\frac{\mathrm{3}\pi}{\mathrm{7}}\right) \\ $$$$\left.\mathrm{2}\right)\:{calculate}\:{B}\:={tan}\left(\frac{\pi}{\mathrm{7}}\right).{tan}\left(\frac{\mathrm{2}\pi}{\mathrm{7}}\right).{tan}\left(\frac{\mathrm{3}\pi}{\mathrm{7}}\right). \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on 02/Jul/18 $${A}×\mathrm{2}{sin}\frac{\Pi}{\mathrm{7}}=\mathrm{2}{sin}\frac{\Pi}{\mathrm{7}}{cos}\frac{\Pi}{\mathrm{7}}{cos}\frac{\mathrm{2}\Pi}{\mathrm{7}}{cos}\frac{\mathrm{3}\Pi}{\mathrm{7}} \\…
Question Number 169771 by greougoury555 last updated on 08/May/22 $$\:\:\:\:\:\:\frac{\mathrm{1}}{\mathrm{1}+\mathrm{cos}\:^{\mathrm{2}} {x}}\:+\:\frac{\mathrm{1}}{\mathrm{sin}\:^{\mathrm{2}} {x}+\mathrm{1}}\:=\:\frac{\mathrm{48}}{\mathrm{35}} \\ $$ Answered by kapoorshah last updated on 08/May/22 $${SyberMath} \\ $$ Answered…
Question Number 169709 by alcohol last updated on 06/May/22 Commented by alcohol last updated on 06/May/22 please help me solve anyone you can please thanks so much Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 169702 by Anyangwa last updated on 06/May/22 $$\begin{vmatrix}{\mathrm{0}}&{\mathrm{4}}&{\mathrm{1}}&{\mathrm{1}}\\{\mathrm{4}}&{\mathrm{0}}&{\mathrm{0}}&{\mathrm{1}}\\{\mathrm{3}}&{\mathrm{5}}&{\mathrm{2}}&{\mathrm{1}}\\{\mathrm{2}}&{\mathrm{2}}&{\mathrm{5}}&{\mathrm{1}}\end{vmatrix}=\: \\ $$ Answered by MikeH last updated on 06/May/22 $$\mathrm{Identify}\:\mathrm{the}\:\mathrm{row}\:\mathrm{with}\:\mathrm{maximum}\:\mathrm{number} \\ $$$$\mathrm{of}\:\mathrm{zeros}. \\ $$$$−\mathrm{4}\left(\mathrm{4}\left(\mathrm{2}−\mathrm{5}\right)+\left(\mathrm{15}−\mathrm{4}\right)\right)+\left(\mathrm{4}\left(\mathrm{5}−\mathrm{2}\right)−\mathrm{0}+\left(\mathrm{6}−\mathrm{10}\right)\right. \\…
Question Number 38618 by tawa tawa last updated on 27/Jun/18 Commented by MrW3 last updated on 28/Jun/18 $$\left[\mathrm{1}−\frac{\mathrm{1}}{\mathrm{2}}\left(\mathrm{1}−{x}\right)\right]^{\mathrm{4}} =\mathrm{1}−\mathrm{4}{x}+{px}^{\mathrm{2}} +{qx}^{\mathrm{3}} +… \\ $$$${this}\:{can}\:{not}\:{be}\:{true}. \\ $$$$\Rightarrow{something}\:{is}\:{wrong}\:{with}\:{the}\:{question}.…
Question Number 38600 by ajfour last updated on 27/Jun/18 Commented by ajfour last updated on 27/Jun/18 $${Find}\:\theta\:{in}\:{terms}\:{of}\:\boldsymbol{{c}}\:. \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on…
Question Number 104122 by Dwaipayan Shikari last updated on 19/Jul/20 $$\frac{\mathrm{1}}{\mathrm{sin2x}}+\frac{\mathrm{1}}{\mathrm{sin2}^{\mathrm{2}} \mathrm{x}}+…..+\frac{\mathrm{1}}{\mathrm{sin2}^{\mathrm{n}} \mathrm{x}} \\ $$$$\mathrm{Find}\:\mathrm{the}\:\mathrm{value}\: \\ $$ Answered by OlafThorendsen last updated on 19/Jul/20 $$\frac{\mathrm{1}}{\mathrm{sin}{u}}\:=\:\frac{\mathrm{sin}\left({u}−\frac{{u}}{\mathrm{2}}\right)}{{sinu}\mathrm{sin}\frac{{u}}{\mathrm{2}}}…