Question Number 172065 by mnjuly1970 last updated on 23/Jun/22 | ||
$$ \\ $$$$\:\:\:\:\:\mathrm{Test}\:: \\ $$$$\:\:\mathrm{Q}\::\:\:\:\mathrm{If}\:,\:\:\mid\overset{\rightarrow} {\mathrm{a}}\:×\:\overset{\rightarrow} {\mathrm{b}}\mid\:=\:\sqrt{\mathrm{11}}\:\:\:,\:\:\:\mathrm{2}\overset{\rightarrow} {\mathrm{a}}\:+\:\mathrm{3}\overset{\rightarrow} {\mathrm{b}}=\:\overset{\rightarrow} {\mathrm{i}}+\:\mathrm{2}\overset{\rightarrow} {\mathrm{j}}+\:\mathrm{3}\overset{\rightarrow\:} {\mathrm{k}} \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{then}\:\:\::\:\:\:\mid\:\:\mathrm{2}\overset{\rightarrow} {\mathrm{a}}\:+\:\overset{\rightarrow} {\mathrm{a}}×\overset{\rightarrow} {\mathrm{b}}\:+\:\mathrm{3}\overset{\rightarrow} {\mathrm{b}}\:\mid\:=\:? \\ $$$$\:\:\:\:\:\:\:\mathrm{1}\:::\:\:\:\:\:\:\:\mathrm{5}\:\:\:\Box\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{2}\:::\:\:\:\:\:\:\:\mathrm{3}\:\:\Box\:\:\:\:\: \\ $$$$\:\:\:\:\:\:\:\:\mathrm{3}::\:\:\:\:\:\:\:\:\:\mathrm{9}\:\Box\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\mathrm{4}::\:\:\:\:\:\:\:\:\mathrm{7}\:\:\Box\: \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:−−−−−−−−−−−−−− \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\: \\ $$$$ \\ $$ | ||
Answered by greougoury555 last updated on 23/Jun/22 | ||
Commented by mnjuly1970 last updated on 23/Jun/22 | ||
$$\:\:\:{bravo}\:{sir}\:... \\ $$ | ||