Question Number 179529 by mathlove last updated on 30/Oct/22 $$\left(\mathrm{2}−\sqrt{\mathrm{3}}\right)^{{x}} +\left(\mathrm{2}+\sqrt{\mathrm{3}}\right)^{{x}} =\mathrm{4}\:\:\:\:\:\:{x}=? \\ $$ Answered by mr W last updated on 30/Oct/22 $$\left(\mathrm{2}−\sqrt{\mathrm{3}}\right)\left(\mathrm{2}+\sqrt{\mathrm{3}}\right)=\mathrm{2}^{\mathrm{2}} −\left(\sqrt{\mathrm{3}}\right)^{\mathrm{2}} =\mathrm{4}−\mathrm{3}=\mathrm{1}…
Question Number 48447 by rahul 19 last updated on 24/Nov/18 $${Find}\:{the}\:{sum}\:\underset{{k}=\mathrm{0}} {\overset{\mathrm{10}} {\sum}}\:^{\mathrm{20}} {C}_{{k}} \:. \\ $$ Commented by rahul 19 last updated on 24/Nov/18…
Question Number 179517 by cortano1 last updated on 30/Oct/22 $$\:\mathrm{22}!\:\equiv\:\mathrm{x}\:\left(\mathrm{mod}\:\mathrm{2024}\right) \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 179518 by mathlove last updated on 30/Oct/22 $${a}−\frac{\mathrm{1}}{{b}}=\mathrm{2}{cos}\frac{\mathrm{2}\pi}{\mathrm{13}} \\ $$$${b}−\frac{\mathrm{1}}{{c}}=\mathrm{2}{cos}\frac{\mathrm{6}\pi}{\mathrm{13}} \\ $$$${c}−\frac{\mathrm{1}}{{a}}=\mathrm{2}{cos}\frac{\mathrm{8}\pi}{\mathrm{13}}\:\:\:\:\:\:{prove}\:{that} \\ $$$$\left({abc}\right)^{\mathrm{5}} −\frac{\mathrm{1}}{\left({abc}\right)^{\mathrm{5}} }=\mathrm{11} \\ $$ Commented by mr W last…
Question Number 48443 by rahul 19 last updated on 24/Nov/18 $${Coefficient}\:{of}\:{x}^{\mathrm{4}} \:{in}\:\left(\mathrm{2}−{x}+\mathrm{3}{x}^{\mathrm{2}} \right)^{\mathrm{6}} =? \\ $$ Commented by rahul 19 last updated on 24/Nov/18 $${Do}\:{by}\:{multinomial}\:{expansions}….…
Question Number 113975 by I want to learn more last updated on 16/Sep/20 $$\mathrm{Find}\:\mathrm{the}\:\mathrm{nth}\:\mathrm{term}:\:\:\:\mathrm{1},\:\:\mathrm{0},\:\:−\:\mathrm{1},\:\:\mathrm{0},\:\:\mathrm{1},\:\:\mathrm{0},\:\:−\:\mathrm{1},\:\:\mathrm{0},\:\:… \\ $$ Answered by Olaf last updated on 16/Sep/20 $${u}_{{n}} \:=\:\mathrm{cos}\left({n}\frac{\pi}{\mathrm{2}}\right)…
Question Number 179496 by a.lgnaoui last updated on 29/Oct/22 $${Evaluer} \\ $$$$\int_{\mathrm{1}} ^{\mathrm{2}} \frac{\mathrm{sin}\:\left(\mathrm{log}\left(\mathrm{x}\right)\right)}{\mathrm{x}}\mathrm{dx} \\ $$ Answered by ARUNG_Brandon_MBU last updated on 29/Oct/22 $$\int_{\mathrm{1}} ^{\mathrm{2}}…
Question Number 179494 by a.lgnaoui last updated on 29/Oct/22 $${Evaluer} \\ $$$$\int\frac{\mathrm{1}−\mathrm{logx}}{\mathrm{1}+\mathrm{x}}\mathrm{dx} \\ $$ Answered by ARUNG_Brandon_MBU last updated on 29/Oct/22 $$\int\frac{\mathrm{1}−\mathrm{log}{x}}{\mathrm{1}+{x}}{dx} \\ $$$$=\mathrm{log}\left(\mathrm{1}+{x}\right)−\underset{{n}=\mathrm{0}} {\overset{\infty}…
Question Number 113931 by Rasheed.Sindhi last updated on 16/Sep/20 $$\mid\:{x}\:\mid=\mathrm{2}\Rightarrow\:{x}=\mathrm{2}\:\vee\:{x}=−\mathrm{2} \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:{OR} \\ $$$$\mid\:{x}\:\mid=\mathrm{2}\Rightarrow\:{x}=\mathrm{2}\:\wedge\:{x}=−\mathrm{2} \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:? \\ $$ Commented by bemath last updated on 16/Sep/20…
Question Number 113913 by Aina Samuel Temidayo last updated on 16/Sep/20 $$\mathrm{Find}\:\mathrm{the}\:\mathrm{square}\:\mathrm{root}\:\mathrm{of}\:\sqrt{\mathrm{50}}+\sqrt{\mathrm{48}} \\ $$ Answered by 1549442205PVT last updated on 16/Sep/20 $$\mathrm{We}\:\mathrm{have}\:\left(\sqrt{\mathrm{50}}+\sqrt{\mathrm{48}}\right)^{\mathrm{2}} =\mathrm{98}+\mathrm{2}\sqrt{\mathrm{50}.\mathrm{48}} \\ $$$$=\mathrm{98}+\mathrm{2}\sqrt{\mathrm{25}.\mathrm{16}.\mathrm{6}}=\mathrm{98}+\mathrm{40}\sqrt{\mathrm{6}}…