- [ beginarray r r r 3 & 5 & - 0.6 9 & frac{910 } & - 9 endarray ] / 2.4

常见问题解答

• 解决方案 \(- \left [ \begin{array} { r r r } { 3 } & { 5 } & { - 0.6 } \\ { 9 } & { \frac{9}{10} } & { - 9 } \end{array} \right ] \div 2.4\)

  

  $$\left[\begin{array}{lll}-\frac{5}{4}& -\frac{25}{12}& \frac{1}{4}\\ -\frac{15}{4}& -\frac{3}{8}& \frac{15}{4}\end{array}\right]$$