9. Let T be an operator on an n-dimensional vector space V over a field F. (a) If T has n distinct eigenvalues prove that T is diagonalizable. If T is diagonaziable prove that the characteristic polynomial of T splits over F. (c) Give an example of an operator T such that the characteristic polynomial of T splits but T is not diagonalizable.

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter5: Inner Product Spaces
Section5.CR: Review Exercises
Problem 47CR: Find an orthonormal basis for the subspace of Euclidean 3 space below. W={(x1,x2,x3):x1+x2+x3=0}
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**Question 9:**

Let \( T \) be an operator on an \( n \)-dimensional vector space \( V \) over a field \( F \).

(a) If \( T \) has \( n \) distinct eigenvalues, prove that \( T \) is diagonalizable.

(b) If \( T \) is diagonalizable, prove that the characteristic polynomial of \( T \) splits over \( F \).

(c) Give an example of an operator \( T \) such that the characteristic polynomial of \( T \) splits but \( T \) is not diagonalizable.
Transcribed Image Text:**Question 9:** Let \( T \) be an operator on an \( n \)-dimensional vector space \( V \) over a field \( F \). (a) If \( T \) has \( n \) distinct eigenvalues, prove that \( T \) is diagonalizable. (b) If \( T \) is diagonalizable, prove that the characteristic polynomial of \( T \) splits over \( F \). (c) Give an example of an operator \( T \) such that the characteristic polynomial of \( T \) splits but \( T \) is not diagonalizable.
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