Question Number 174871 by Ml last updated on 13/Aug/22 Answered by Rasheed.Sindhi last updated on 13/Aug/22 $${a}_{\mathrm{15}} =\mathrm{32},\:\:\:{S}_{\mathrm{9}} +{S}_{\mathrm{29}} =\mathrm{100},\:\:{a}_{\mathrm{23}} =? \\ $$$$\underline{{Assuming}\:{a}_{{n}} \:{an}\:{AP}} \\…
Question Number 109337 by ZiYangLee last updated on 22/Aug/20 $${x}=\mathrm{cos}\theta,\:\mathrm{where}\:\frac{\mathrm{3}\pi}{\mathrm{2}}<\theta<\mathrm{2}\pi,\:\mathrm{and}\:\mathrm{that}\:\mathrm{2cos}\theta−\mathrm{sin}\theta=\mathrm{2}, \\ $$$$\mathrm{show}\:\mathrm{that}\:\sqrt{\mathrm{1}−{x}^{\mathrm{2}} }=\mathrm{2}\left(\mathrm{1}−{x}\right). \\ $$$$\mathrm{Hence}\:\mathrm{or}\:\mathrm{otherwise},\:\mathrm{find}\:{x}\:\mathrm{and}\:\mathrm{deduce}\:\mathrm{that}\:\mathrm{tan2}\theta=\frac{\mathrm{24}}{\mathrm{7}} \\ $$ Answered by Aziztisffola last updated on 22/Aug/20 $$\sqrt{\mathrm{1}−{x}^{\mathrm{2}}…
Question Number 109329 by mohammad17 last updated on 22/Aug/20 $${if}\:{all}\:{A},{B}\:{be}\:{a}\:{set}\:{prove}\:{that}\left(\:{A}^{{B}} =\:\emptyset\leftrightarrow{A}=\emptyset\:{and}\:{B}=\emptyset\right)\: \\ $$$${help}\:{me}\:{sir}\: \\ $$ Commented by kaivan.ahmadi last updated on 22/Aug/20 $${hi}\:{sir}.\:{what}\:{is}\:{the}\:{meaning}\:{of}\:{A}^{{B}} ? \\…
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Question Number 174844 by daus last updated on 12/Aug/22 Commented by daus last updated on 12/Aug/22 $${pls}\:{help}\:{for}\:{D}\: \\ $$$${a}^{{k}} \:+\:{a}^{{k}+\mathrm{2}} \:+…..\:{n}^{{th}} \:{term} \\ $$ Answered…
Question Number 174849 by jeanpierrensabimana last updated on 12/Aug/22 Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 109290 by Rasikh last updated on 22/Aug/20 Answered by JDamian last updated on 22/Aug/20 $$\mathrm{0} \\ $$ Commented by Rasikh last updated on…
Question Number 43748 by naka3546 last updated on 15/Sep/18 Answered by tanmay.chaudhury50@gmail.com last updated on 15/Sep/18 $${f}\left({x}\right)=\mathrm{3}{x}^{\mathrm{3}} +{x}−\mathrm{1} \\ $$$${f}\left(\mathrm{0}\right)=−{ve} \\ $$$${f}\left(\mathrm{1}\right)=+{ve} \\ $$$${f}\left(\mathrm{0}.\mathrm{5}\right)=−{ve} \\…
Question Number 43749 by naka3546 last updated on 15/Sep/18 Answered by MrW3 last updated on 16/Sep/18 $$\mathrm{2}\left({n}^{\mathrm{2}} +\mathrm{3}{n}−\mathrm{1993}\right)={k}^{\mathrm{2}} \\ $$$${k}\:{must}\:{be}\:{even}\:\Rightarrow{k}=\mathrm{2}{m} \\ $$$${n}^{\mathrm{2}} +\mathrm{3}{n}−\mathrm{1993}=\mathrm{2}{m}^{\mathrm{2}} \\ $$$${n}\left({n}+\mathrm{3}\right)=\mathrm{2}{m}^{\mathrm{2}}…
Question Number 174811 by mokys last updated on 11/Aug/22 Commented by Rasheed.Sindhi last updated on 12/Aug/22 $$\mathcal{T}{oo}\:{many}\:{questions}\:{per}\:{single}\:{post}! \\ $$ Commented by Mastermind last updated on…