An engineer is monitoring the output voltage V(t)V(t)V(t) of a circuit at different times ttt (measured in seconds). He correctly evaluates:
V(1)=−5 V and V(3)=5 V V(1) = -5 \text{ V and } V(3) = 5 \text{ V} V(1)=−5 V and V(3)=5 Vand concludes that there must be at least one time t∈(1,3)t \in (1, 3)t∈(1,3) where the voltage is zero, due to the change of sign. For which of the following models is this conclusion incorrect?
