Consider the following matrix,
Find a non-zero vector in Nul A.
Use row reduced method.
The matrix has 2 pivot columns and 2 free columns.
So, the general solution is,
Then, a vector parametric solution is,
Therefore, the required non-zero vectors in Nul A are,
Find a non zero vector in Col A
observe the equation (1), the first two columns of the matrix
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