- #1
tangibleLime
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Homework Statement
Find the kernel of [tex]\left( \begin{array}{ccc}
0 & 1 & 0 \\
0 & 0 & 1 \\
0 & 0 & 0 \end{array} \right)\[/tex]
Homework Equations
The Attempt at a Solution
I know how to find the kernel of a matrix that has numbers in all of the columns, but I think that since this matrix has a zero vector in the first column it's throwing me off. I know the answer is the unit vector e1, but I don't know why.
I know that
[tex]imA = span(\left( \begin{array}{ccc}
1 \\
0 \\
0 \end{array} \right)\, \left( \begin{array}{ccc}
0 \\
1 \\
0 \end{array} \right)\)[/tex]
And I know that the kernel is what makes Ax = 0. But I can't figure it out for some reason, while I can easily get the more complicated problems. Maybe it's too simple and I'm over-thinking it?