Question Number 88592 by Rio Michael last updated on 11/Apr/20 $$\mathrm{show}\:\mathrm{that}\:\mathrm{the}\:\mathrm{variance}\:\delta^{\mathrm{2}} \:\mathrm{of}\:\mathrm{a}\:\mathrm{set}\:\mathrm{of}\:\mathrm{observations}\:{x}_{\mathrm{1}} ,{x}_{\mathrm{2}} ,…{x}_{{n}} \:\mathrm{with}\:\mathrm{mean} \\ $$$$\overset{\_} {{x}}\:\mathrm{can}\:\mathrm{be}\:\mathrm{expressed}\:\mathrm{in}\:\mathrm{the}\:\mathrm{form}\:\:\delta^{\mathrm{2}} \:=\:\frac{\underset{{i}=\mathrm{1}} {\overset{{n}} {\sum}}{x}_{{i}} ^{\mathrm{2}} }{{n}}\:−\:\bar {{x}}\:^{\mathrm{2}\:} \\…
Question Number 23057 by Physics lover last updated on 25/Oct/17 Commented by Physics lover last updated on 25/Oct/17 $${question}\:{number}\:\mathrm{8}\:{please}. \\ $$ Terms of Service Privacy…
Question Number 88590 by akash4081 last updated on 11/Apr/20 $${a}^{{a}^{{a}^{{a}^{\mathrm{3}} } } } =\mathrm{5} \\ $$$${find}−{a} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 88586 by M±th+et£s last updated on 11/Apr/20 $$\int\frac{\sqrt{{cos}\left(\mathrm{2}{x}\right)+\mathrm{3}}}{{cos}\left({x}\right)}{dx} \\ $$ Answered by TANMAY PANACEA. last updated on 11/Apr/20 $$\int\frac{{cos}\mathrm{2}{x}+\mathrm{3}}{{cosx}\sqrt{\mathrm{3}+{cos}\mathrm{2}{x}}}{dx} \\ $$$$\int\frac{\mathrm{2}{cos}^{\mathrm{2}} {x}+\mathrm{2}}{{cosx}\sqrt{\mathrm{2}{cos}^{\mathrm{2}} {x}+\mathrm{2}}}…
Question Number 23050 by jazary last updated on 25/Oct/17 $${how}\:{can}\:{demonstred}\:{that}\: \\ $$$$\:\:\:\forall{a},{b},{c}\in\mathbb{N}\: \\ $$$${a}^{\mathrm{2}} +{b}^{\mathrm{2}} ={c}^{\mathrm{2}} \:\:\Rightarrow \\ $$$${abc}\equiv\mathrm{0}\left[\mathrm{60}\right]\:\: \\ $$ Answered by Rasheed.Sindhi last…
Question Number 23049 by Tinkutara last updated on 25/Oct/17 $$\mathrm{A}\:\mathrm{particle}\:\mathrm{of}\:\mathrm{mass}\:{m}\:\mathrm{strikes}\:\mathrm{on}\:\mathrm{ground} \\ $$$$\mathrm{with}\:\mathrm{angle}\:\mathrm{of}\:\mathrm{incidence}\:\mathrm{45}°.\:\mathrm{If}\:\mathrm{coefficient} \\ $$$$\mathrm{of}\:\mathrm{restitution},\:{e}\:=\:\frac{\mathrm{1}}{\:\sqrt{\mathrm{2}}}\:,\:\mathrm{find}\:\mathrm{the}\:\mathrm{velocity} \\ $$$$\mathrm{after}\:\mathrm{impact}\:\mathrm{and}\:\mathrm{angle}\:\mathrm{of}\:\mathrm{reflection}. \\ $$ Answered by ajfour last updated on 25/Oct/17…
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Question Number 88580 by jagoll last updated on 11/Apr/20 $$ \\ $$$$\underset{{x}\rightarrow\mathrm{0}} {\mathrm{lim}}\:\frac{\sqrt{\mathrm{1}+\mathrm{4x}}\:−\sqrt[{\mathrm{3}\:\:}]{\mathrm{1}+\mathrm{6x}}}{\mathrm{1}−\mathrm{cos}\:\mathrm{3x}}\:= \\ $$ Commented by mathmax by abdo last updated on 11/Apr/20 $${let}\:{f}\left({x}\right)=\frac{\sqrt{\mathrm{1}+\mathrm{4}{x}}−^{\mathrm{3}}…
Question Number 23036 by ajfour last updated on 25/Oct/17 Commented by mrW1 last updated on 25/Oct/17 $$\frac{\left[\boldsymbol{{PQRSTU}}\right]}{\left[\boldsymbol{{ABCDEF}}\right]}=\frac{\mathrm{1}}{\mathrm{7}} \\ $$ Commented by ajfour last updated on…
Question Number 154104 by ZiYangLee last updated on 14/Sep/21 $$\:\:\int\:{e}^{\sqrt{{x}}} \:{dx}\:=? \\ $$ Answered by peter frank last updated on 14/Sep/21 $${u}=\sqrt{{x}} \\ $$$${u}^{\mathrm{2}} ={x}…