1) Suppose TE L(V) and there exists a positive integer n such that T" = 0. (a) Prove that I-T is invertible and that (1-T)-1 =I+T+ •+ T"-". (b) Explain how you would guess the formula above. O. Suppose A is an

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter6: Matrices And Determinants
Section6.4: Determinants And Cramer’s Rule
Problem 3E
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Question  1

) Suppose TE L(V) and there exists a positive integer n such that T" = 0.
%3D
(a) Prove that I-T is invertible and that (I– T)-1 = I +T + •…+T"-".
%3D
...
(b) Explain how you would guess the formula above.
2) Suppose T E L(V) and ( T- 21)(T-31)(T – 41) = 0. Suppose i is an
eigenvalue of T. Prove that 2 = 2 or 2 = 3 or A = 4. Assume the field of scalars is
%3D
C, R, or Q.
Droun that T = I.
Transcribed Image Text:) Suppose TE L(V) and there exists a positive integer n such that T" = 0. %3D (a) Prove that I-T is invertible and that (I– T)-1 = I +T + •…+T"-". %3D ... (b) Explain how you would guess the formula above. 2) Suppose T E L(V) and ( T- 21)(T-31)(T – 41) = 0. Suppose i is an eigenvalue of T. Prove that 2 = 2 or 2 = 3 or A = 4. Assume the field of scalars is %3D C, R, or Q. Droun that T = I.
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