# Using LaTeX for Equations

In the technical reports I find myself writing these days there are usually a lot of equations and I have found LaTeX to be the best for this. I usually use the Sitmo online editor. The following post is a reference for some of the LaTeX commands I can never remember (to be appended)

• Matricies
example: code:
 \frac{d}{dt} \left( {\begin{array}{cc} \omega \\ I \\ \end{array} } \right) = \left( {\begin{array}{cc} -\frac{B}{J} & -\frac{K}{J} \\ -\frac{K}{L} & -\frac{R}{L} \\ \end{array} } \right) \left( {\begin{array}{cc} \omega \\ I \\ \end{array} } \right) + \left( {\begin{array}{cc} 0 \\ \frac{1}{L} \\ \end{array} } \right) E

example: code:
 \left[ \begin{array}{ccc} a_{11} & a_{12} & a_{13} \\ a_{21} & a_{22} & a_{23} \\ a_{31} & a_{32} & a_{33} \end{array} \right]\

example: code:
 \left[ \begin{array}{c} y_{1} \\ y_{2} \end{array} \right] = \left[ \begin{array}{cc} G_{11} & G_{12} \\ G_{21} & G_{22} \end{array} \right] \left[ \begin{array}{c} u_{1} \\ u_{2} \end{array} \right]

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