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May 15th, 2016, 07:23 PM   #81
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How to write vectors and matrices in LaTeX, as well as the Sarrus method in which we make diagonal slashes (not \cancel)?
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May 15th, 2016, 08:39 PM   #82
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$$\begin{bmatrix}
a_{11} & a_{12} & \cdots & a_{1n} \\
a_{21} & a_{22} & \cdots & a_{2n} \\
\vdots & \vdots & \ddots & \vdots \\
a_{n1} & a_{n2} & \cdots & a_{nn} \\
\end{bmatrix}$$

You can also use
$$\begin{Bmatrix} a & b \\ c & d \end{Bmatrix}$$

Or
$$\begin{pmatrix} a & b \\ c & d \end{pmatrix}$$
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