Let {v1, v2, . . . , vn} be a basis for a vector space V. Prove that if a linear transformation T: V→V satisfies T(vi) = 0 for i = 1, 2, . . . , n, then T is the zero transformation.Getting Started: To prove that T is the zero transformation, you need to show that T(v) = 0 for every vector v in V.(i) Let v be an arbitrary vector in V such that v = c1v1 + c2v2 + . . . + cnvn.(ii) Use the definition and properties of linear transformations to rewrite T(v) as a linear combination of T(vi).(iii) Use the fact that T(vi) = 0 to conclude that T(v) = 0, making T the zero transformation.

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.4: Linear Transformations
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Let {v1, v2, . . . , vn} be a basis for a vector space V. Prove that if a linear transformation T: V→V satisfies T(vi) = 0 for i = 1, 2, . . . , n, then T is the zero transformation.
Getting Started: To prove that T is the zero transformation, you need to show that T(v) = 0 for every vector v in V.
(i) Let v be an arbitrary vector in V such that v = c1v1 + c2v2 + . . . + cnvn.
(ii) Use the definition and properties of linear transformations to rewrite T(v) as a linear combination of T(vi).
(iii) Use the fact that T(vi) = 0 to conclude that T(v) = 0, making T the zero transformation.

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