Question Number 83524 by liki last updated on 03/Mar/20 Commented by liki last updated on 03/Mar/20 $$…{help}\:{me}\:{plz}\:{qns}\:{no}.\:\mathrm{5},\mathrm{7}\:{and}\:\mathrm{9} \\ $$ Commented by liki last updated on…
Question Number 17989 by alex041103 last updated on 13/Jul/17 $${Solve}\:{for}\:{x} \\ $$$${x}^{{x}^{{x}^{{x}^{….} } } } =\:\mathrm{4} \\ $$ Commented by alex041103 last updated on 13/Jul/17…
Question Number 83520 by john santu last updated on 03/Mar/20 $$\mathrm{closest}\:\mathrm{distance}\:\mathrm{point}\:\left(\mathrm{6},\mathrm{9}\right)\: \\ $$$$\mathrm{to}\:\mathrm{curve}\:\mathrm{y}\:=\:\mathrm{x}^{\mathrm{2}} −\mathrm{12x}+\mathrm{32}\:. \\ $$$$\mathrm{mister}\:\mathrm{w}\:\mathrm{your}\:\mathrm{method}\:\mathrm{can}\:\mathrm{be}\: \\ $$$$\mathrm{applied}\:\mathrm{to}\:\mathrm{this}\:\mathrm{problem}? \\ $$ Answered by john santu last…
Question Number 17985 by tawa tawa last updated on 13/Jul/17 $$\mathrm{solve}\:\mathrm{simultaneously}. \\ $$$$\mathrm{x}^{\mathrm{3}} \:+\:\mathrm{y}^{\mathrm{3}} \:=\:\mathrm{35} \\ $$$$\mathrm{x}^{\mathrm{4}} \:+\:\mathrm{y}^{\mathrm{4}} \:=\:\mathrm{97} \\ $$ Answered by mrW1 last…
Question Number 83521 by M±th+et£s last updated on 03/Mar/20 $$\int\frac{\sqrt{{sin}\left({x}\right)}}{{sin}^{\mathrm{2}} \left({x}\right)+\mathrm{1}}\:{dx} \\ $$ Commented by msup trace by abdo last updated on 04/Mar/20 $${changement}\:{tan}\left(\frac{{x}}{\mathrm{2}}\right)={t}\:{give} \\…
Question Number 17983 by alex041103 last updated on 13/Jul/17 $${Evaluate}\:{cos}\left(\mathrm{20}°\right){cos}\left(\mathrm{40}°\right){cos}\left(\mathrm{80}°\right). \\ $$$${This}\:{question}\:{is}\:{just}\:{for}\:{fun}\:{and}\:{practice}. \\ $$$${Evryone}\:{who}\:{wants}\:{can}\:{answer}\:{this}\:{question}. \\ $$ Answered by ajfour last updated on 13/Jul/17 $$\mathrm{cos}\:\mathrm{20}°\mathrm{cos}\:\mathrm{40}°\mathrm{cos}\:\mathrm{80}°= \\…
Question Number 83512 by jagoll last updated on 03/Mar/20 $$\mathrm{find}\:\mathrm{the}\:\mathrm{solution}\: \\ $$$$\frac{\mathrm{4x}^{\mathrm{2}} }{\left(\mathrm{1}−\sqrt{\mathrm{2x}+\mathrm{1}}\right)^{\mathrm{2}} }\:<\:\mathrm{2x}+\mathrm{9} \\ $$ Answered by john santu last updated on 03/Mar/20 $$\left(\mathrm{1}\right)\:\mathrm{2x}\:+\mathrm{9}\:>\:\mathrm{0}\:\Rightarrow\:\mathrm{x}\:>\:−\frac{\mathrm{9}}{\mathrm{2}}…
Question Number 83513 by jagoll last updated on 03/Mar/20 $$\mathrm{If}\:\mathrm{m}\:\mathrm{tan}\:\left(\theta−\mathrm{30}^{\mathrm{o}} \right)\:=\:\mathrm{n}\:\mathrm{tan}\:\left(\theta+\mathrm{12}^{\mathrm{o}} \right) \\ $$$$\mathrm{prove}\:\mathrm{that}\:\mathrm{cos}\:\mathrm{2}\theta\:=\:\frac{\mathrm{m}+\mathrm{n}}{\mathrm{2}\left(\mathrm{m}−\mathrm{n}\right)} \\ $$ Commented by mind is power last updated on 04/Mar/20…
Question Number 17976 by tawa tawa last updated on 13/Jul/17 $$\mathrm{A}\:\mathrm{driver}\:\mathrm{is}\:\mathrm{5}.\mathrm{2}\:\mathrm{below}\:\mathrm{the}\:\mathrm{surface}\:\mathrm{of}\:\mathrm{water}\:\mathrm{of}\:\mathrm{density}\:\mathrm{1000kg}/\mathrm{m}.\:\:\mathrm{if}\:\mathrm{the} \\ $$$$\mathrm{atmospheric}\:\mathrm{pressure}\:\mathrm{is}\:\mathrm{1}.\mathrm{02}\:×\:\mathrm{10}^{\mathrm{5}} \:\mathrm{Pa}.\:\mathrm{calculate}\:\mathrm{the}\:\mathrm{pressure}\:\mathrm{on}\:\mathrm{the}\:\mathrm{driver}. \\ $$ Answered by ajfour last updated on 13/Jul/17 $$\mathrm{P}=\mathrm{P}_{\mathrm{0}} +\rho\mathrm{gh}…
Question Number 149045 by mathdanisur last updated on 02/Aug/21 $$\mid\overset{\rightarrow} {\boldsymbol{{a}}}\mid\:=\:\mid\overset{\rightarrow} {\boldsymbol{{b}}}\mid\:=\:\mathrm{4}\:\:\:{and}\:\:\:{cos}\boldsymbol{\alpha}\:=\:\mathrm{60}° \\ $$$${find}\:\:\:\overset{\rightarrow} {\boldsymbol{{a}}}\:\centerdot\:\overset{\rightarrow} {\boldsymbol{{b}}}\:=\:? \\ $$ Answered by puissant last updated on 02/Aug/21…