s14_concept

# s14_concept - Working with Complex Amplitudes Concept Test...

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± Working with Complex Amplitudes Concept Test A signal y ( t ) is represented as e jωt y ( t ) = Real Y where Y = Y R + jY I Express y ( t ) in terms of sines and cosines. 1. y ( t ) = Y R cos ωt + Y I sin ωt 2. y ( t ) = Y R cos ωt Y I sin ωt 3. y ( t ) = Y I cos ωt + Y R sin ωt 4. y ( t ) = Y I cos ωt Y R sin ωt 5. None of the above

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Working with Complex Amplitudes Solution 0 10 20 30 40 1 2 3 4 5 Number of Students Answer Lecture S14: Working with Complex Amplitudes y ( t ) can be found by direct calculation: h i y ( t ) = Real Y e jωt
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s14_concept - Working with Complex Amplitudes Concept Test...

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