2.6. Which of the following matrices are Toeplitz? a. 3 2 1 4 3 2 5 4...

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2.6. Which of the following matrices are Toeplitz?

a.

3 2 1 4 3 2 5 4 3

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, b.

1 2 3 1 2 3 1 2 3

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, c.

1 1 1 1 1 1 1 1 1

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, d.

3 2 1 2 1 2 1 2 3

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, e.

1 2 3 2 1 2 3 2 1

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f.

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+ −

− +

+ −

)

(1 ) (1 ) 1

(1 ) 1 (1 1 (1 ) (1 )

j j j j j j What is special about matrices

c, d,

e, and f?

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