(→The basics of linearity) |
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<math>e^{(-2jt)}</math> --->[system]---><math>te^{(2jt)}</math> | <math>e^{(-2jt)}</math> --->[system]---><math>te^{(2jt)}</math> | ||
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| + | <math>\cos x = \mathrm{Re}\{e^{ix}\} ={e^{ix} + e^{-ix} \over 2}</math> | ||
Revision as of 05:07, 19 September 2008
The basics of linearity
$ e^{(2jt)} $ --->[system]--->$ te^{(-2jt)} $
$ e^{(-2jt)} $ --->[system]--->$ te^{(2jt)} $
$ \cos x = \mathrm{Re}\{e^{ix}\} ={e^{ix} + e^{-ix} \over 2} $
