Exercise 4.5.4

Answers

$(- e^{- i𝜃} + 1) (- e^{i𝜃} + 1) = 1 - e^{- i𝜃} - e^{i𝜃} + 1 = - e^{- i𝜃} + 2 - e^{i𝜃}$

We see that in the limit $a_{- 1} = a_{1} = - 1$

This agrees with the $LU$ in the limit, that is $(- 1) (- 1) + (1) (1) = 2$

niuers

2020-03-20 00:00