- \( h(t) \) is a piecewise function:
- From \( t = 0 \) to \( t = 1 \), \( h(t) = 2 \).
- From \( t = 1 \) to \( t = 2 \), \( h(t) = -1 \).
- From \( t = 2 \) to \( t = 3 \), \( h(t) = 0 \).
- From \( t = 3 \) to \( t = 4 \), \( h(t) = 1 \).
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