Hello,

I have an assignment due tomorrow, and Im stuck at this problem:

Let V be a vector space over any field F, and W1 and W2 be two subspaces of V.

b) Give examples for V, W1, W2 such that W1 U W2 is NOT a subspace of V.

Any ideas?

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- September 20th 2009, 03:55 PMLinearAlgsubset U subset is NOT subspace of Superset?
Hello,

I have an assignment due tomorrow, and Im stuck at this problem:

Let V be a vector space over any field F, and W1 and W2 be two subspaces of V.

b) Give examples for V, W1, W2 such that W1 U W2 is NOT a subspace of V.

Any ideas? - September 20th 2009, 04:17 PMBruno J.
In : is not a subspace - for instance it does not contain