Why does the blue vout curve have the shape it does Identify

Why does the blue (vout) curve have the shape it does? Identify the transient and steady state regions.

V(vout) V(vin) 1.0V 0.8V 0.6V 0.4V 0.2V 0.0V 0.2V 0.4V 0.6V 0.8V 1.0V Oms 50ms 100ms 150ms 200ms 250ms 300ms 350ms 400ms 450ms 500ms

Solution

t= 0ms to 150ms transient region

t= 150ms to 500ms steady state region