Mathematics · Signals and Systems
Consider a signal x(t) = 5 cos2πt3 + 9 sin(0.5πt) + 3 sin(πt3 - π6) + 12. Identify the valid statement for x(t).
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1x(t) is periodic with frequency 12 Hz
- 2x(t) is not periodic
- 3x(t) is periodic with period 1.2 s
- 4x(t) is periodic with frequency (1/12) Hz✓
Correct answer
x(t) is periodic with frequency (1/12) Hz
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