This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
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 classiﬁcation 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 ( ωt + φ ) 1 + j (1-j ) and leave the result in polar form. (b) Simplify (cos ωt + j sin ωt ) (cos 2 ωt-j sin 2 ωt ) and leave the result in polar form....
View Full Document
- Fall '08
- Addition, Period, English-language films, Complex number, Jin Hyung Lee, Signals Jin Hyung