final_F07_sol

final_F07_sol - Final exam answers 1 Matching time and...

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Unformatted text preview: Final exam answers 1 Matching time and frequency representations a. 1 A 5 0 C 0 D 10 BC 0 D B b. 5 A c. 0 A 0 B 5 C 0 D 2 Discrete-time periodicity Answer is 15. 3 Find the output signal 2 1 -2 -1 0 1 2 3 4 5 6 Final exam answers / 6.003: Signals and Systems (Fall 2007) 4 Frequency response a. 2 1 0 2 0 3 2 4 2 2 0 3 3 4 0 5 0 6 0 7 5 3 9 3 10 02 89 0 10 8 b. 0 1 5 5 3 6 3 7 5 Mystery cosine Answer is π/3, 2π + π/3, 2π − π/3. 6 Discrete-time poles and zeros a. 0 0 5 1 2 2 0 3 0 ≥3 0 2 0 3 0 ≥3 b. 1 0 5 1 7 Taking medicine a. Answer is 1/ ln 1.5 ≈ 2.5. b. Answer is 8 hours/ ln 1.5 ≈ 20 hours. c. Answer is 1/3. 8 Maximizing output samples Answer is 10223 . 2 Final exam answers / 6.003: Signals and Systems (Fall 2007) 9 Musical timbre a. 0 A 5 B 1 C b. 0 A 1 B 5 C 10 Lightbulb flicker a. Answer is 0.088 . . .. b. Answer is 4. 11 Half the unit step a. Answer is 1. b. Answer is 0.5. 3 MIT OpenCourseWare http://ocw.mit.edu 6.003 Signals and Systems Spring 2010 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms . ...
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final_F07_sol - Final exam answers 1 Matching time and...

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