3. Let V be a vector space over R with subspaces U and W. (a) Show that U nW is a subspace of V. (b) Give an example of V, U and W with the prop- erty that U UW is not a subspace of V. (c) Is it true that U \ W = {u € U | u ¢ W} is a subspace of V?
3. Let V be a vector space over R with subspaces U and W. (a) Show that U nW is a subspace of V. (b) Give an example of V, U and W with the prop- erty that U UW is not a subspace of V. (c) Is it true that U \ W = {u € U | u ¢ W} is a subspace of V?
Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter4: Vector Spaces
Section4.3: Subspaces Of Vector Spaces
Problem 56E: Give an example showing that the union of two subspaces of a vector space V is not necessarily a...
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