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The equation for the waveform shown in the figure in terms of the linear combination of step functions—
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- f (t) = 10 u (t – 2) – 10 u (t – 4) – 15 u (t – 7) + 15 u (t – 10)
- f (t) = 10 u (t – 2) – 15 u (t – 7)
- f (t) = 10 u (t – 2) + 10 u (t – 4) – 15 u (t – 7) + 15 u (t – 10)
- None of the above
Correct Option: A
The given waveform is the linear combination of 4 waveforms shown below.
f (t) = f 1(t) + f 2(t) + f 3(t) + f 4(t)
or f (t) = 10 u (t – 2) – 10 u (t – 4) – 15 u (t – 7) + 15 u (t – 10)
