## Objective

is to represent a matrix and determination using LaTeX.

## Example 1. Matrix

### Code

\left( \begin{array}{ccc}
\lambda_{11} & \lambda_{12} & \lambda_{13} \\
\lambda_{21} & \lambda_{22} & \lambda_{23} \\
\lambda_{31} & \lambda_{32} & \lambda_{33}
\end{array} \right)

### Result

## Example 2. Determination

### Code

(\vec{A} \times \vec{B}) \cdot \vec{C} =
\left| \begin{array}{ccc}
A_1 & A_2 & A_3 \\
B_1 & B_2 & B_3 \\
C_1 & C_2 & C_3
\end{array} \right|

### Result

## References

http://study-astrophysics.com/marion-01-03/
http://study-astrophysics.com/marion-01-11/