If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is____________?
Correct answer: A. a sinusoid of the same frequency
- A. a sinusoid of the same frequency
- B. a sinusoid of half the original frequency
- C. a sinusoid of double the frequency
- D. not a sinusoid
Explanation
The difference of two sinusoids having the same frequency can be combined into one sinusoid of that same frequency, with a new amplitude and phase angle. Subtraction changes the phase and magnitude, not the frequency.
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