**Unformatted text preview: **Key concepts are time delay and time advance. 8. e-j10t , e +j10t 9. (a) True (b) False (c) True 10. (a) 8 2 1 6 2 1 10 3 ) 10 ( ) ( × + = x x t 8 2 1 6 2 2 10 3 55 ] 10 ) 55 [( ) ( × + + − = x x t (b) r(t) = 1.3918cos(300000000 π t – 0.8011) (c) 2 π ft 2 - 2 π ft 1 = n π n = …-5, -3, -1, 1, 3, 5, … Substitute t 1 (x) and t 2 (x) into above equation and solve for x. One possible solution: x = 5200 m Challenge Problem: ∑ − = − − − = 1 ) 2 1 ( ) 2 sin( ) 2 sin( 1 L k L j k j L L e e L ω...

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- Spring '05
- JOHNSON
- Frequency, radian freq