x[n] is a real, causal sequence with discrete-time Fouorier transform X(e j? ). The imaginary part of

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x[n] is a real, causal sequence with discrete-time Fouorier transform X(ej?). The imaginary part of X(ej?) is?

jm{ X(ej?).} = sin ?,

and it is also known that?

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Discrete Time Signal Processing

ISBN: 978-0137549207

2nd Edition

Authors: Alan V. Oppenheim, Rolan W. Schafer

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