2) Let W1, W2 be subspaces of V. Prove that W1 UW2 is a subspace if and only if W1 C W2 or W2 C W1.

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Chapter4: Vector Spaces
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2) Let W1, W2 be subspaces of V. Prove that W1 UW2 is a subspace if and only if
Wi C W2 or W2 C W1.
Transcribed Image Text:2) Let W1, W2 be subspaces of V. Prove that W1 UW2 is a subspace if and only if Wi C W2 or W2 C W1.
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