Question Number 131199 by aurpeyz last updated on 02/Feb/21 Answered by physicstutes last updated on 02/Feb/21 $$\boldsymbol{\mathrm{Example}}\:\mathrm{4} \\ $$$${Q}_{\mathrm{1}} \:=\:\mathrm{2}.\mathrm{0}\:\mu\mathrm{C}\:\mathrm{and}\:{Q}_{\mathrm{2}} \:=\:−\mathrm{4}.\mathrm{0}\:\mu\mathrm{C},\:{R}\:=\:\mathrm{50}\:\mathrm{cm} \\ $$$$\mathrm{the}\:\mathrm{neutral}\:\mathrm{point}\:\mathrm{lies}\:\mathrm{a}\:\mathrm{distance}\:\mathrm{of}\:{x}\:\mathrm{from}\:{Q}_{\mathrm{1}} \:\mathrm{and}\:\left(\mathrm{0}.\mathrm{5}−{x}\right)\:\mathrm{m}\:\mathrm{from}\:{Q}_{\mathrm{2}} \\…
Question Number 131188 by abdurehime last updated on 02/Feb/21 $$\mathrm{find}\:\mathrm{the}\:\mathrm{point}\:\mathrm{on}\:\mathrm{the}\:\mathrm{graph}\:\mathrm{of}\:\mathrm{f}\left(\mathrm{x}\right)=\mathrm{1}−\mathrm{x}^{\mathrm{2}} \\ $$$$\mathrm{that}\:\mathrm{are}\:\mathrm{closest}\:\mathrm{to}\:\mathrm{O}\left(\mathrm{0},\mathrm{0}\right) \\ $$ Answered by john_santu last updated on 02/Feb/21 $${let}\:{P}\left({x},{y}\right)\:{is}\:{the}\:{point}\:{on}\:{the} \\ $$$${curve}.\: \\…
Question Number 112 by saidinesh999.sd@gmail.com last updated on 25/Jan/15 $${if}\:\:{sinhx}=\mathrm{1}/\mathrm{2}\:\:{then}\:{find}\:{cosh} \\ $$$$\left(\mathrm{2}{x}\right)+{sinh}\left(\mathrm{2}{x}\right) \\ $$$$ \\ $$$$ \\ $$$$ \\ $$ Answered by sagarwal last updated…
Question Number 114 by saidinesh999.sd@gmail.com last updated on 25/Jan/15 $${a}\:{bus}\:{travels}\:{at}\:{a}\:{speed}\:{of}\:\mathrm{72}\:{km}\:{per}\:{hour}.{what}\:{is}\:{its}\:{speed}\:{in}\:{metres}\:{per}\:{second}? \\ $$$$ \\ $$$$ \\ $$$$ \\ $$$$ \\ $$ Answered by ghosea last updated…
Question Number 131166 by SEKRET last updated on 02/Feb/21 $$\:\int_{\mathrm{0}} ^{+\infty} \frac{\mathrm{1}}{\boldsymbol{\mathrm{e}}^{\boldsymbol{\mathrm{x}}} \centerdot\boldsymbol{\mathrm{ln}}\left(\boldsymbol{\mathrm{x}}\right)}\boldsymbol{\mathrm{dx}}=? \\ $$$$ \\ $$ Commented by Dwaipayan Shikari last updated on 02/Feb/21…
Question Number 131159 by mohammad17 last updated on 02/Feb/21 Commented by mohammad17 last updated on 02/Feb/21 $${who}\:{can}\:{solve}\:{this}\:? \\ $$ Commented by mohammad17 last updated on…
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Question Number 65587 by naka3546 last updated on 31/Jul/19 $${Prove}\:\:{that} \\ $$$$\:\:\:\:\:\mathrm{1}^{\mathrm{3}} \:+\:\mathrm{2}^{\mathrm{3}} \:+\:\mathrm{3}^{\mathrm{3}} \:+\:\ldots\:+\:{n}^{\mathrm{3}} \:\:=\:\:\left(\mathrm{1}+\mathrm{2}+\mathrm{3}+…+{n}\right)^{\mathrm{2}} \\ $$ Commented by naka3546 last updated on 31/Jul/19…
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Question Number 131107 by ZiYangLee last updated on 01/Feb/21 $$\mathrm{Solve}\:\mathrm{sin}^{−\mathrm{1}} {x}+\mathrm{sin}^{−\mathrm{1}} \frac{{x}}{\mathrm{2}}=\frac{\mathrm{2}\pi}{\mathrm{3}} \\ $$ Answered by mr W last updated on 01/Feb/21 $${let}\:{t}=\frac{{x}}{\mathrm{2}}>\mathrm{0} \\ $$$$\mathrm{sin}^{−\mathrm{1}}…