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B
1.5r(t+2)−1.5r(t)+u(t−3)−4u(t−5)
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C
1.5r(t+2)−1.5r(t)+u(t−3)+4u(t−5)
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D
0.666r(t+2)−0.666r(t)+u(t−3)+4u(t−5)
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Solution
The correct option is B1.5r(t+2)−1.5r(t)+u(t−3)−4u(t−5)
When slope change occur, we get ramp function and when amplitude change occur, we get unit step function.
ramp function =(final slope -initial slope) . r (t - c.p)
step function =(final amplitude - initial amplitude) . u (t - c.p)