Question: True or false: If V and W are invariant subspaces for the matrix A, then so is (a) V + W; (b) V W;

True or false: If V and W are invariant subspaces for the matrix A, then so is

(a) V + W;

(b) V ∩ W;

(c) V ∪ W;

(d) V \W.

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