First, can anyone explain to me the meaning of spanning set? I am a little confused with it meaning.

Then please show me how to do the below questions. Thank you very much.

Determine whether any of the following sets are spanning sets for R^2 , considered as column matrices

1) S = { esub1 = [1] , esub2 = [0]}

........................[0]............. [1]

2) S = { esub1 = [1] , esub2 = [0], fsub1 = [1]}

........................[0]............. [1].............[1]

3) S = { fsub1 = [1] , fsub2 = [2]}

.......................[1]............. [2]

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note: e and f are vectors.