Let V be a vector space and S a subset of V with the property that whenever v1, v2, . . . , vn ∈ S and a1v1 +a2v2 + · · · + anvn= 0, then a1 = a2=  · · = an = 0. Prove that every vector in the span of S can be uniquely written as a linear combination of vectors of S.

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter5: Inner Product Spaces
Section5.CM: Cumulative Review
Problem 24CM
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Let V be a vector space and S a subset of V with the property that whenever v1, v2, . . . , vn ∈ S and a1v1 +a2v2 + · · · + anvn= 0, then a1 = a2=  · · = an = 0. Prove that every vector in the span of S can be uniquely written as a linear combination of vectors of S.

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