演習問題

${\displaystyle \overrightarrow{a}=\left(4,1,3\right)}$ ， ${\displaystyle \overrightarrow{b}=\left(1,2,1\right)}$ ， ${\displaystyle \overrightarrow{c}=\left(2,-1,2\right)}$ の外積 ${\displaystyle \left(\overrightarrow{a}\times \overrightarrow{b}\right)\times \overrightarrow{c}}$ を求めよ．

${\displaystyle \overrightarrow{a}=\left(4,1,3\right)}$ ， ${\displaystyle \overrightarrow{b}=\left(1,2,1\right)}$ ， ${\displaystyle \overrightarrow{c}=\left(2,-1,2\right)}$ の外積 ${\displaystyle {\displaystyle \overrightarrow{a}\times \left(\overrightarrow{b}\times \overrightarrow{c}\right)}}$ を求めよ．