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Unformatted text preview: 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 j ( ωt + φ ) 1 + j (1-j ) and leave the result in polar form. (b) Simplify (cos ωt + j sin ωt )(cos2 ωt-j sin2 ωt ) and leave the result in polar form. 7. Write the following signals as a combination (sums or products) of scaled and shifted unit rectangles rect ( t ) and unit triangles Δ( t ) . 2-1 1-2 1 2-2-1 x(t) a) 2-1 1-2 1 2-2-1 t x(t) b)...
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- Fall '11
- Addition, English-language films, Summation, Complex number, following signals, Jin Hyung Lee