Electronics Engineering · Signals and Systems
A voltage waveform v(t) starts at 0, steps up by 1 unit at t = 1, steps up by another 1 unit at t = 2, steps up by a third unit at t = 3, and then returns to 0 at t = 4. Which of the following expressions correctly represents v(t) using the unit step function u(t)?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1u(t - 1) + u(t - 2) + u(t - 3) - 3u(t - 4)✓
- 2u(t - 1) - u(t - 2) - u(t - 3) + 3u(t - 4)
- 3u(t - 1) + 2u(t - 2) + 3u(t - 3)
- 4u(t - 1) + u(t - 2) + u(t - 3)
Correct answer
u(t - 1) + u(t - 2) + u(t - 3) - 3u(t - 4)
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