# $$\text{NumberColumns}$$¶

You can use the $$\text{NumberColumns}$$ function to determine the number of columns in a matrix.

You can use the \ncols backslash command to insert this function.

The following variants of this function are available:

• $$\text{integer } \text{NumberColumns} \left ( \text{<matrix>} \right )$$

The $$\text{<matrix>}$$ value is the matrix to determine the number of columns in. The function returns an integer value indicating the number of columns.

Below is a basic example using the $$NumberColumns$$ function.

$\begin{split}A = \begin{bmatrix} 1 & 2 & 3 \\ 4 & 5 & 6 \end{bmatrix}\end{split}$
$a = \text{NumberColumns } A \;\;\;\; \text{a = 3}$