Question Number 9271 by tawakalitu last updated on 27/Nov/16 $$\mathrm{Find}\:\mathrm{the}\:\mathrm{determinant}\:\mathrm{of}\:\mathrm{the}\:\mathrm{matrix}\:\mathrm{below}. \\ $$$$\begin{vmatrix}{\mathrm{3}\:\:\mathrm{1}\:\:\mathrm{5}\:\:\mathrm{3}}\\{\mathrm{4}\:\:\mathrm{3}\:\:\mathrm{8}\:\:\mathrm{5}}\\{\mathrm{6}\:\:\mathrm{2}\:\:\mathrm{1}\:\:\mathrm{7}}\\{\mathrm{8}\:\:\mathrm{5}\:\:\mathrm{8}\:\:\mathrm{1}}\end{vmatrix} \\ $$ Answered by mrW last updated on 27/Nov/16 $$\mathrm{C4}−\mathrm{C1}: \\ $$$$\begin{vmatrix}{\mathrm{3}}&{\mathrm{1}}&{\mathrm{5}}&{\mathrm{0}}\\{\mathrm{4}}&{\mathrm{3}}&{\mathrm{8}}&{\mathrm{1}}\\{\mathrm{6}}&{\mathrm{2}}&{\mathrm{1}}&{\mathrm{1}}\\{\mathrm{8}}&{\mathrm{5}}&{\mathrm{8}}&{−\mathrm{7}}\end{vmatrix} \\…
Question Number 140343 by Algoritm last updated on 06/May/21 Answered by help last updated on 08/May/21 $${x}=\mathrm{35} \\ $$ Terms of Service Privacy Policy Contact:…
Question Number 9268 by Adarsh last updated on 27/Nov/16 $$\mathrm{2}+\mathrm{x}=\mathrm{3} \\ $$ Answered by FilupSmith last updated on 27/Nov/16 $${x}=\mathrm{1} \\ $$ Terms of Service…
Question Number 74802 by liki last updated on 30/Nov/19 Commented by liki last updated on 30/Nov/19 $$…{plz}\:{i}\:{need}\:{help}\:;{mr}\:{w}\:{and}\:{mr}\:{mind}\:{is}\:{power} \\ $$$$,\:{or}\:{anyeone}\:{to}\:{assist}\:{me}! \\ $$ Commented by abdomathmax last…
Question Number 140339 by mohammad17 last updated on 06/May/21 $$\int\frac{{dx}}{\:\sqrt{\mathrm{1}+{x}^{\mathrm{4}} }} \\ $$ Answered by Dwaipayan Shikari last updated on 06/May/21 $$\int\frac{{dx}}{\:\sqrt{\mathrm{1}+{x}^{\mathrm{4}} }}=\underset{{n}\geqslant\mathrm{0}} {\sum}\int\frac{\left(\frac{\mathrm{1}}{\mathrm{2}}\right)_{{n}} }{{n}!}\left(−{x}^{\mathrm{4}}…
Question Number 74800 by mathmax by abdo last updated on 30/Nov/19 $${study}\:{the}\:{existence}\:{of}\:{f}\left({x}\right)=\int_{\mathrm{0}} ^{\infty} \:\:\frac{{tcos}\left({tx}\right)}{\mathrm{1}+{t}^{\mathrm{2}} }{dt} \\ $$ Answered by mind is power last updated on…
Question Number 9265 by j.masanja06@gmail.com last updated on 26/Nov/16 $$\mathrm{find}\:\mathrm{the}\:\mathrm{value}\:\mathrm{of}\:\:\:\:\:\:\:\:\sum_{\mathrm{k}=\mathrm{2}} ^{\mathrm{5}} \mathrm{k}^{\mathrm{2}} \\ $$ Answered by mrW last updated on 27/Nov/16 $$\mathrm{generally}\:\mathrm{for}\:\mathrm{1}\leqslant\mathrm{m}\leqslant\mathrm{n} \\ $$$$\underset{\mathrm{k}=\mathrm{1}} {\overset{\mathrm{n}}…
Question Number 140338 by Arzoon last updated on 06/May/21 $${if}\:\theta=\frac{\pi}{\mathrm{2}{n}+\mathrm{1}},\:{n}\geqslant\mathrm{1},\:{n}\in{N}\:,{then}\:{prove}\:{that}: \\ $$$${tan}\theta{tan}\mathrm{2}\theta{tan}\mathrm{3}\theta\centerdot\:\centerdot\:\centerdot\:\centerdot\:\centerdot\:\centerdot\:{tan}\left({n}\theta\right)\:=\:\sqrt{\mathrm{2}{n}+\mathrm{1}} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 74801 by behi83417@gmail.com last updated on 30/Nov/19 $$\begin{cases}{\boldsymbol{\mathrm{x}}^{\mathrm{2}} +\boldsymbol{\mathrm{y}}^{\mathrm{3}} =\mathrm{23}}\\{\boldsymbol{\mathrm{x}}^{\mathrm{3}} +\boldsymbol{\mathrm{y}}^{\mathrm{2}} =\mathrm{32}}\end{cases}\:\:\:\:\:\:\boldsymbol{\mathrm{solve}}\:\boldsymbol{\mathrm{for}}\:\boldsymbol{\mathrm{x}}\:\boldsymbol{\mathrm{and}}\:\boldsymbol{\mathrm{y}}\:. \\ $$ Commented by MJS last updated on 30/Nov/19 $$\mathrm{if}\:\mathrm{you}\:\mathrm{plot}\:\mathrm{these}\:\mathrm{you}\:\mathrm{see}\:\mathrm{there}'\mathrm{s}\:\mathrm{only}\:\mathrm{one} \\…
Question Number 74798 by mathmax by abdo last updated on 30/Nov/19 $${calculate}\:\int_{\mathrm{0}} ^{\pi} {ln}\left(\mathrm{1}−\mathrm{2}{xcos}\theta\:+{x}^{\mathrm{2}} \right){d}\theta\:\:{with}\:\mid{x}\mid<\mathrm{1} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com