Question #10400269

# Show that A is singular?

**Let L be a linear operator on R^n. Suppose that L(x) = 0 for some x does not equal to 0. Let A be the matrix representing L with respect to the standard basis {e1, e2, ......, en). Show that A is singular.
No idea how to solve it and don't want to ask my instructor b/c she'll make this even more complicated. Please helpppppp. Thanks in advance.
**

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