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Nullity

 Description  The nullity of an $m×n$ matrix is the dimension of its null space, an integer equal to the column dimension ($n$) less the rank of the matrix. 

Enter a matrix.

 > $\left[\begin{array}{rrrr}{46}& {42}& {-}{17}& {53}\\ {32}& {21}& {-}{13}& {31}\\ {46}& {49}& {-}{16}& {58}\end{array}\right]$
 $\left[\begin{array}{rrrr}{46}& {42}& {-}{17}& {53}\\ {32}& {21}& {-}{13}& {31}\\ {46}& {49}& {-}{16}& {58}\end{array}\right]$ (1)

The nullity of the matrix:

 > $\mathrm{LinearAlgebra}\left[\mathrm{ColumnDimension}\right]\left(\right)-\mathrm{LinearAlgebra}\left[\mathrm{Rank}\right]\left(\right)$
 ${2}$ (2)
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