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If-A-is-3-4-matrix-and-B-is-a-matrix-such-that-A-B-and-BA-are-both-defined-Then-B-is-of-the-type-

Question Number 55845 by gunawan last updated on 05/Mar/19 $$\mathrm{If}\:{A}\:\mathrm{is}\:\mathrm{3}×\mathrm{4}\:\mathrm{matrix}\:\mathrm{and}\:{B}\:\mathrm{is}\:\mathrm{a}\:\mathrm{matrix}\:\mathrm{such} \\ $$$$\mathrm{that}\:{A}'{B}\:\mathrm{and}\:{BA}'\:\mathrm{are}\:\mathrm{both}\:\mathrm{defined}.\:\mathrm{Then} \\ $$$${B}\:\:\:\mathrm{is}\:\mathrm{of}\:\mathrm{the}\:\mathrm{type} \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com

Consider-the-system-of-equations-a-1-x-b-1-y-c-1-z-0-a-2-x-b-2-y-c-2-z-0-a-3-x-b-3-y-c-3-z-0-if-determinant-a-1-b-1-c-1-a-2-b-2-c-2-a-3-b-3-c-3-0-then-the-system-has-

Question Number 55843 by gunawan last updated on 05/Mar/19 $$\mathrm{Consider}\:\mathrm{the}\:\mathrm{system}\:\mathrm{of}\:\mathrm{equations} \\ $$$${a}_{\mathrm{1}} {x}+{b}_{\mathrm{1}} {y}+{c}_{\mathrm{1}} {z}=\mathrm{0},\:{a}_{\mathrm{2}} {x}+{b}_{\mathrm{2}} {y}+{c}_{\mathrm{2}} {z}=\mathrm{0}\:, \\ $$$${a}_{\mathrm{3}} {x}+{b}_{\mathrm{3}} {y}+{c}_{\mathrm{3}} {z}=\mathrm{0}\:\:\mathrm{if} \\ $$$$\begin{vmatrix}{{a}_{\mathrm{1}}…

If-A-4-x-2-2x-3-x-1-is-symmetric-then-x-

Question Number 55841 by gunawan last updated on 05/Mar/19 $$\mathrm{If}\:{A}=\begin{bmatrix}{\:\:\:\:\mathrm{4}}&{{x}+\mathrm{2}}\\{\mathrm{2}{x}−\mathrm{3}}&{{x}+\mathrm{1}}\end{bmatrix}\:\mathrm{is}\:\mathrm{symmetric},\:\mathrm{then}\:{x}= \\ $$ Answered by gunawan last updated on 05/Mar/19 $${A}={A}^{{t}} \\ $$$$\begin{bmatrix}{\mathrm{4}}&{{x}+\mathrm{2}}\\{\mathrm{2}{x}−\mathrm{3}}&{{x}+\mathrm{1}}\end{bmatrix}=\begin{bmatrix}{\mathrm{4}}&{\mathrm{2}{x}−\mathrm{3}}\\{{x}+\mathrm{2}}&{{x}+\mathrm{1}}\end{bmatrix} \\ $$$${x}+\mathrm{2}=\mathrm{2}{x}−\mathrm{3} \\…

The-sum-of-the-last-eight-coefficients-in-the-expansion-of-1-x-16-is-2-15-

Question Number 55788 by gunawan last updated on 04/Mar/19 $$\mathrm{The}\:\mathrm{sum}\:\mathrm{of}\:\mathrm{the}\:\mathrm{last}\:\mathrm{eight}\:\mathrm{coefficients}\:\mathrm{in} \\ $$$$\mathrm{the}\:\mathrm{expansion}\:\mathrm{of}\:\left(\mathrm{1}+{x}\right)^{\mathrm{16}} \:\mathrm{is}\:\mathrm{2}^{\mathrm{15}} \:. \\ $$ Commented by gunawan last updated on 04/Mar/19 $$\mathrm{True}\:\mathrm{or}\:\mathrm{false} \\…

If-the-third-term-in-the-expansion-of-1-x-x-log-10-x-5-is-1000-then-the-value-of-x-is-

Question Number 55786 by gunawan last updated on 04/Mar/19 $$\mathrm{If}\:\mathrm{the}\:\mathrm{third}\:\mathrm{term}\:\mathrm{in}\:\mathrm{the}\:\mathrm{expansion}\:\mathrm{of}\: \\ $$$$\left(\frac{\mathrm{1}}{{x}}\:+\:{x}^{\mathrm{log}_{\mathrm{10}} {x}} \right)^{\mathrm{5}} \:\mathrm{is}\:\mathrm{1000},\:\mathrm{then}\:\mathrm{the}\:\mathrm{value}\:\mathrm{of} \\ $$$${x}\:\mathrm{is} \\ $$ Answered by tanmay.chaudhury50@gmail.com last updated on…

If-x-log-1-1-x-dx-f-x-log-x-1-g-x-x-2-Ax-C-then-

Question Number 55779 by gunawan last updated on 04/Mar/19 $$\mathrm{If}\:\int\:{x}\:\mathrm{log}\:\left(\mathrm{1}+\frac{\mathrm{1}}{{x}}\right){dx}\: \\ $$$$\:\:\:\:\:\:=\:{f}\left({x}\right)\:\centerdot\:\mathrm{log}\:\left({x}+\mathrm{1}\right)+{g}\left({x}\right)\:\centerdot\:{x}^{\mathrm{2}} +{Ax}+{C}, \\ $$$$\mathrm{then} \\ $$ Commented by gunawan last updated on 04/Mar/19 $$\mathrm{Find}\:{A}…