Determine if is an eigenvector of the matrix .

 1.

-54100
6-7014
-445-4
4-4-27
,
1
1
0
0

 2.

-163-3
054-2
1-313
-13-3-5
,
5
5
-2
3

 3.

-7-635-13
-4-520-6
-3-315-5
-3-313-3
,
5
2
2
1

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