Question Number 181280 by mnjuly1970 last updated on 23/Nov/22 Answered by Frix last updated on 23/Nov/22 $$\varphi=\mathrm{1}+\frac{\mathrm{1}}{\varphi} \\ $$$$\frac{\varphi}{\mathrm{1}}=\frac{\varphi+\mathrm{1}}{\varphi} \\ $$$$\mathrm{which}\:\mathrm{is}\:\mathrm{the}\:\mathrm{definition}\:\mathrm{of}\:\mathrm{the}\:\mathrm{Golden}\:\mathrm{Ratio} \\ $$ Terms of…
Question Number 180299 by mnjuly1970 last updated on 10/Nov/22 Answered by som(math1967) last updated on 10/Nov/22 Commented by som(math1967) last updated on 10/Nov/22 $${let}\:{O}\:{is}\:{centre}\:{of}\:{semicircle} \\…
Question Number 179919 by mnjuly1970 last updated on 04/Nov/22 $$ \\ $$$$\:\:\:\:\:\:\:\mathrm{Evaluate}\: \\ $$$$\:\:\:\:\:\:\Omega\:=\:\mathrm{lim}_{\:{n}\rightarrow\infty} \left(\:{n}−\:\underset{{k}=\mathrm{1}} {\overset{{n}} {\sum}}\mathrm{cos}\:\left(\:\frac{\:\sqrt{{k}}}{\:{n}}\:\:\right)\:\right)\:=?\:\:\:\:\:\: \\ $$$$\:\:\:\:\: \\ $$ Answered by mindispower last…
Question Number 179918 by mnjuly1970 last updated on 04/Nov/22 Answered by mindispower last updated on 05/Nov/22 $$\zeta\left({t}+=−\gamma−\Sigma\zeta\left({n}+\mathrm{1}\right)\left(−{t}\right)^{{n}} \right. \\ $$$$\Psi'\left({z}+\mathrm{1}\right)=−\Sigma\frac{{n}\zeta\left({n}+\mathrm{1}\right)\left(−\mathrm{1}\right)^{{n}} {t}^{\boldsymbol{{n}}−\mathrm{1}} }{\mathrm{1}} \\ $$$${z}\Psi''\left({z}+\mathrm{1}\right)=−\Sigma{n}\left(−\mathrm{1}\right)^{{n}} {t}^{{n}}…
Question Number 114235 by Aina Samuel Temidayo last updated on 18/Sep/20 $$\mathrm{Let}\:\mathrm{A}=\left\{\left(\mathrm{n},\mathrm{2n}\right):\mathrm{n}\in\mathrm{N}\right\}\:\mathrm{and} \\ $$$$\mathrm{B}=\left\{\left(\mathrm{2n},\mathrm{3n}\right):\mathrm{n}\in\mathrm{N}\right\}.\:\mathrm{Then}\:\mathrm{A}\cap\mathrm{B}\:\mathrm{is} \\ $$$$\mathrm{equal}\:\mathrm{to} \\ $$ Answered by 1549442205PVT last updated on 18/Sep/20…
Question Number 114236 by Aina Samuel Temidayo last updated on 18/Sep/20 $$\mathrm{70\%}\:\mathrm{of}\:\mathrm{the}\:\mathrm{employees}\:\mathrm{in}\:\mathrm{a} \\ $$$$\mathrm{multinational}\:\mathrm{corporation}\:\mathrm{have}\:\mathrm{VCD} \\ $$$$\mathrm{players},\:\mathrm{75\%}\:\mathrm{have}\:\mathrm{microwave}\:\mathrm{ovens}, \\ $$$$\mathrm{80\%}\:\mathrm{have}\:\mathrm{ACs}\:\mathrm{and}\:\mathrm{85\%}\:\mathrm{have}\:\mathrm{washing} \\ $$$$\mathrm{machines}.\:\mathrm{At}\:\mathrm{least}\:\mathrm{what}\:\mathrm{percentage}\:\mathrm{of} \\ $$$$\mathrm{employees}\:\mathrm{has}\:\mathrm{all}\:\mathrm{four}\:\mathrm{gadgets}? \\ $$ Answered…
Question Number 114233 by Aina Samuel Temidayo last updated on 18/Sep/20 $$\mathrm{If}\:\mathrm{two}\:\mathrm{sets}\:\mathrm{A}\:\mathrm{and}\:\mathrm{B}\:\mathrm{are}\:\mathrm{having}\:\mathrm{99} \\ $$$$\mathrm{elements}\:\mathrm{in}\:\mathrm{common},\:\mathrm{then}\:\mathrm{the} \\ $$$$\mathrm{number}\:\mathrm{of}\:\mathrm{elements}\:\mathrm{common}\:\mathrm{to}\:\mathrm{each} \\ $$$$\mathrm{of}\:\mathrm{the}\:\mathrm{sets}\:\mathrm{A}×\mathrm{B}\:\mathrm{and}\:\mathrm{B}×\mathrm{A}\:\mathrm{is} \\ $$ Answered by 1549442205PVT last updated…
Question Number 114061 by Aina Samuel Temidayo last updated on 17/Sep/20 Answered by bobhans last updated on 17/Sep/20 $${A}\cap{B}\:=\:\varnothing \\ $$ Terms of Service Privacy…
Question Number 47354 by behi83417@gmail.com last updated on 08/Nov/18 Commented by behi83417@gmail.com last updated on 08/Nov/18 $${ABC},{is}\:{a}\:{equelateral}\:{triangle}\:{with} \\ $$$${AB}=\mathrm{2},{and}:{AC}\:'=\mathrm{3},{BA}'=\mathrm{2}. \\ $$$$……\boldsymbol{\mathrm{CD}}=? \\ $$ Commented by…
Question Number 45840 by Rauny last updated on 17/Oct/18 $${a}\leqq\mathrm{7}\Rightarrow\mathrm{P}\left(!\exists{x}_{{a}} \right)=\mathrm{0}, \\ $$$${b}\leqq\mathrm{9}\Rightarrow\mathrm{Q}\left(!\exists{y}_{{b}} \right)=\mathrm{0}\:\mathrm{for}\:{a},\:{b}\in\mathbb{N} \\ $$$$\mathrm{And}\:{A}\supsetneq{A}':\:{A}=\left\{\left({x},\:{y}\right)\mid\mathrm{P}\left({x}\right)\centerdot\mathrm{Q}\left({y}\right)=\mathrm{0}\right\}={A}', \\ $$$${B}_{\in{A}} =\left\{\left({x},\:{y}\right)\in{A}\mid{x}={y}\right\} \\ $$$$\mathrm{Then}\:\forall{t}\in\mathbb{N}:\:\mid{B}\mid={n}\left({t}\right)={f}\left(\mathrm{P}\left({x}\right),\:\mathrm{Q}\left({y}\right)\right), \\ $$$$\mathrm{also}\:\mathrm{only}\:{t}\:\mathrm{can}\:\mathrm{be}\:\mathrm{in}\:\left[{N},\:{M}\right]. \\ $$$$\mathrm{find}\:{M}.…