Suppose W₁ and W₂ are finite dimensional subspaces of a vector space V so that the only vector in both subspaces is the zero vector, that is W₁ W₂ = {0}. Show that dim(W₁) + dim(W₂) by taking a basis v₁, . . . , Vn for W₁ and a basis u₁, ..., um for W₂ and arguing that v₁, ..., Vn, U1, . . ., Um is a basis for W₁ + W2, that is v₁, . . . , Vn, U1, . . ., um is both linearly independent and spans W₁ + W₂. dim(W₁ + W₂) = =

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter4: Vector Spaces
Section4.4: Spanning Sets And Linear Independence
Problem 74E: Let u, v, and w be any three vectors from a vector space V. Determine whether the set of vectors...
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Suppose W₁ and W₂ are finite dimensional subspaces of a vector space V so that the only
vector in both subspaces is the zero vector, that is W₁ W₂ = {0}. Show that
dim(W₁ + W₂) = dim(W₁) + dim(W₂)
by taking a basis v₁,
..."
Un for W₁ and a basis u₁, ..., um for W₂ and arguing that v₁, ..., Un, U1,
is a basis for W₁ + W2, that is v₁, ..., Un, U1,..., Um is both linearly independent and spans
W₁ + W₂.
Um
Transcribed Image Text:Suppose W₁ and W₂ are finite dimensional subspaces of a vector space V so that the only vector in both subspaces is the zero vector, that is W₁ W₂ = {0}. Show that dim(W₁ + W₂) = dim(W₁) + dim(W₂) by taking a basis v₁, ..." Un for W₁ and a basis u₁, ..., um for W₂ and arguing that v₁, ..., Un, U1, is a basis for W₁ + W2, that is v₁, ..., Un, U1,..., Um is both linearly independent and spans W₁ + W₂. Um
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