Question Number 143774 by TheHoneyCat last updated on 18/Jun/21 $$\mathrm{Is}\:\mathrm{this}\:\mathrm{statement}\:{true}\:\mathrm{or}\:\mathrm{not}? \\ $$$$\exists\:\mathrm{A}\in\mathscr{M}_{\mathrm{3}} \left(\mathbb{R}\right)\:\mid\:\mathrm{tr}\left(\mathrm{A}\right)=\mathrm{0}\:\mathrm{and}\:\mathrm{A}^{\mathrm{2}} +^{{t}} \mathrm{A}=\mathrm{I}_{\mathrm{3}} \\ $$ Commented by TheHoneyCat last updated on 18/Jun/21 Oh, I actually found the answer. �� sorry. Should I send it?…
Question Number 12698 by frank ntulah last updated on 29/Apr/17 $$\mathrm{Given}\:\:\:\mathrm{A}^{\left(−\mathrm{1}\right)} =\begin{bmatrix}{\mathrm{0}.\mathrm{5}\:\:\:\:\:\:\mathrm{3}}\\{\mathrm{4}\:\:\:\:\:\:\:\:\:\:\mathrm{2}}\end{bmatrix} \\ $$$$\mathrm{find}\:\left(\mathrm{A}^{\mathrm{2}} \right) \\ $$ Terms of Service Privacy Policy Contact: info@tinkutara.com
Question Number 78233 by jagoll last updated on 15/Jan/20 $${given}\:\mathrm{5}{x}+\mathrm{22}{y}=\mathrm{18} \\ $$$${find}\:{for}\:{x},{y}\:{integer} \\ $$ Commented by mr W last updated on 15/Jan/20 $${x}=−\mathrm{22}{k}+\mathrm{8} \\ $$$${y}=\mathrm{5}{k}−\mathrm{1}…
Question Number 12682 by b.e.h.i.8.3.4.1.7@gmail.com last updated on 28/Apr/17 Answered by mrW1 last updated on 29/Apr/17 $${let}\:{u}={x}+{y} \\ $$$${let}\:{v}={xy} \\ $$$$ \\ $$$$\left({x}+{y}\right)^{\mathrm{2}} ={x}^{\mathrm{2}} +{y}^{\mathrm{2}}…
Question Number 12684 by tawa last updated on 29/Apr/17 Answered by mrW1 last updated on 29/Apr/17 $${p}=\sqrt{{x}} \\ $$$${q}=\sqrt{{y}} \\ $$$${u}={p}+{q} \\ $$$${v}={pq} \\ $$$$…
Question Number 143731 by haladu last updated on 17/Jun/21 Answered by MJS_new last updated on 17/Jun/21 $$\mathrm{if}\:\mathrm{we}\:\mathrm{find}\:{x}>\mathrm{0}\:\mathrm{with}\:\frac{\mathrm{2}{x}+\mathrm{1}}{{x}−\mathrm{1}}={x}^{\mathrm{4}} \:\mathrm{we}\:\mathrm{have}\:\mathrm{a}\:\mathrm{real} \\ $$$$\mathrm{solution} \\ $$$$\Rightarrow \\ $$$${x}^{\mathrm{5}} −{x}^{\mathrm{4}}…
Question Number 143726 by mathdanisur last updated on 17/Jun/21 Commented by mr W last updated on 17/Jun/21 $$=\frac{\mathrm{3}}{\mathrm{256}}\:? \\ $$ Commented by mathdanisur last updated…
Question Number 78177 by jagoll last updated on 15/Jan/20 $${what}\:{equation}\:{of}\:{ellips} \\ $$$${with}\:{F}_{\mathrm{1}} \left(\mathrm{1},\mathrm{2}\right)\:{F}_{\mathrm{2}} \left(\mathrm{3},\mathrm{4}\right)\:{and}\:{a}\:=\:\sqrt{\mathrm{3}} \\ $$ Commented by MJS last updated on 15/Jan/20 $$\mathrm{what}\:\mathrm{are}\:\mathrm{we}\:“\mathrm{allowed}\:\mathrm{to}\:\mathrm{do}''? \\…
Question Number 143706 by Huy last updated on 17/Jun/21 $$\mathrm{2}^{\mathrm{x}} +\mathrm{9}^{\mathrm{y}} =\mathrm{x}^{\mathrm{2}} +\mathrm{9xy}+\mathrm{y}^{\mathrm{2}} \\ $$$$\mathrm{Find}\:\mathrm{x},\mathrm{y}\in\mathbb{N} \\ $$ Answered by TheHoneyCat last updated on 17/Jun/21 $$…
Question Number 78168 by TawaTawa last updated on 14/Jan/20 $$\mathrm{Solve}\:\mathrm{for}\:\:\mathrm{x},\:\mathrm{y},\:\mathrm{z}\:\:\mathrm{if}:\:\:\mathrm{x}^{\mathrm{3}} \:+\:\mathrm{y}^{\mathrm{3}} \:+\:\mathrm{z}^{\mathrm{3}} \:\:=\:\:\mathrm{42} \\ $$ Commented by MJS last updated on 15/Jan/20 $${x}\in\mathbb{N},\:\mathbb{Z},\:\mathbb{R}? \\ $$…