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Eliud has commented on (1) product.
Schaum's Outline of Signals and Systems (Schuam's Outline Series)
Eliud, August 2, 2007
the book is very god, the exercises and examples help me to understand the theory.in the final of the book exist a error
cos(x+y) = cos x cos y ? cos x cos y
the correct is
cos(x+y) = cos x cos y ? sen x sen y
(2 of 4 readers found this comment helpful)