3. For both proofs in this problem, you may not write or refer to any of the entries of any vector. (Hint: Use only the properties from §2.1 Theorem 1 from the lecture notes.) (a) Let a € Rn be a vector satisfying b + a = b for all b € R". Prove that a = 0. (b) Let x = R", and let y € R" be such that x +y = 0. Prove that y = -x.

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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3. For both proofs in this problem, you may not write or refer to any of the entries of any
vector. (Hint: Use only the properties from §2.1 Theorem 1 from the lecture notes.)
(a) Let a € Rn be a vector satisfying b + a = b for all b € R". Prove that a = 0.
(b) Let x = R", and let y € R" be such that x +y = 0. Prove that y = -x.
Transcribed Image Text:3. For both proofs in this problem, you may not write or refer to any of the entries of any vector. (Hint: Use only the properties from §2.1 Theorem 1 from the lecture notes.) (a) Let a € Rn be a vector satisfying b + a = b for all b € R". Prove that a = 0. (b) Let x = R", and let y € R" be such that x +y = 0. Prove that y = -x.
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