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Unformatted text preview: x 1 ( t ) + x 2 ( t ) is aperiodic. 5. Power and Energy Signals Plot these signals, and classify them as energy or power signals. Support your classication with an explicit calculation or an argument. In each case- < t < . (a) x ( t ) = e-2 | t | (b) x ( t ) = 1 t t 1 t < 1 (c) x ( t ) = ( t e t t < (d) x ( t ) = e |-t | 6. Review of Complex Numbers (a) Simplify the following expression e i ( t + ) 1 + j (1-j ) and leave the result in polar form. (b) Simplify (cos t + j sin t ) (cos 2 t-j sin 2 t ) and leave the result in polar form....
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- Fall '08