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Question Number 24152 by Joel577 last updated on 13/Nov/17 $$\mathrm{Let}\:\mathrm{matrice}\:{A}\:=\:\begin{pmatrix}{{a}}&{{b}}\\{{c}}&{{d}}\end{pmatrix},\:\mathrm{and}\:{A}^{{T}} \:=\:{A}^{−\mathrm{1}} \\ $$$$\mathrm{Find}\:{d}\:−\:{bc} \\ $$ Commented by 1kanika# last updated on 26/Nov/17 $$\mathrm{1} \\ $$…
Question Number 89649 by jagoll last updated on 18/Apr/20 $$\mathrm{If}\:\begin{pmatrix}{\mathrm{a}−\mathrm{b}\:\:\:\:\:\:\mathrm{b}+\mathrm{c}}\\{\mathrm{3d}+\mathrm{c}\:\:\:\:\:\mathrm{2c}−\mathrm{d}}\end{pmatrix}\:=\:\begin{pmatrix}{\mathrm{8}\:\:\:\:\mathrm{1}}\\{\mathrm{7}\:\:\:\:\mathrm{6}}\end{pmatrix} \\ $$$$\mathrm{then}\:\mathrm{a}+\mathrm{b}+\mathrm{c}+\mathrm{d}\:=\: \\ $$$$\mathrm{A}.\:−\frac{\mathrm{53}}{\mathrm{7}}\:\:\:\:\:\:\:\mathrm{B}.\:−\frac{\mathrm{18}}{\mathrm{7}}\:\:\:\:\:\:\:\mathrm{C}.\:\frac{\mathrm{43}}{\mathrm{7}} \\ $$$$\mathrm{D}.\:\frac{\mathrm{38}}{\mathrm{7}}\:\:\:\:\mathrm{E}.\:\frac{\mathrm{53}}{\mathrm{7}} \\ $$ Commented by jagoll last updated on 18/Apr/20…
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Question Number 22930 by selestian last updated on 24/Oct/17 Answered by ajfour last updated on 24/Oct/17 $$\left({C}\right)\:\mathrm{626} \\ $$ Commented by selestian last updated on…
Question Number 88364 by Power last updated on 10/Apr/20 Answered by mind is power last updated on 10/Apr/20 $${by}\:{Cauchy}\:{shwart} \\ $$$$\underset{{i}=\mathrm{1}} {\overset{{n}} {\sum}}\mathrm{1}.{x}_{{i}} \leqslant\sqrt{\underset{{i}=\mathrm{1}} {\overset{{n}}…
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Question Number 22432 by Joel577 last updated on 18/Oct/17 $$\begin{pmatrix}{\mathrm{5}\:\:\:\mathrm{3}}\\{\mathrm{3}\:\:\:\mathrm{2}}\end{pmatrix}{A}\:+\:\begin{pmatrix}{\mathrm{2}\:\:\:\mathrm{5}}\\{\mathrm{5}\:\:\:\mathrm{1}}\end{pmatrix}\:=\:\begin{pmatrix}{\mathrm{4}\:\:\:\:\mathrm{7}}\\{\mathrm{6}\:\:\:\:\mathrm{2}}\end{pmatrix} \\ $$$$\mathrm{Find}\:\mid\mathrm{4}{A}^{−\mathrm{1}} \mid \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 153486 by roxceefocus last updated on 07/Sep/21 Answered by liberty last updated on 08/Sep/21 $$\:{det}\left({F}\right)=\mathrm{3}\left(\mathrm{0}\right)−\mathrm{4}\left(\mathrm{0}−\mathrm{4}\right)+\mathrm{2}\left(\mathrm{0}+\mathrm{2}\right) \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:=\mathrm{16}+\mathrm{4}=\mathrm{20} \\ $$$$\begin{pmatrix}{{x}}\\{{y}}\\{{z}}\end{pmatrix}\:=\frac{\mathrm{1}}{\mathrm{20}}\:{adj}\begin{pmatrix}{\mathrm{3}\:\:\:\:\:\:\mathrm{4}\:\:\:\:\:\:\:\mathrm{2}}\\{\mathrm{0}\:\:−\mathrm{1}\:\:\:\:\:\:\mathrm{2}}\\{\mathrm{2}\:\:\:\:\:\:\mathrm{1}\:\:−\mathrm{2}}\end{pmatrix}\:\begin{pmatrix}{−\mathrm{1}}\\{−\mathrm{8}}\\{\:\:\:\mathrm{6}}\end{pmatrix} \\ $$ Terms of…
Question Number 22386 by gopikrishnan005@gmail.com last updated on 17/Oct/17 $${equivalent}\:{matrices}\:{are}\:{obtained}\:{by} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com