Figure 6.9. This is a graph. The vertical axis goes from minus 0.75 to plus 0.75 and is labeled voltage. The horizontal axis goes from 0 to 5 and is labeled time. The voltage is zero from 0 to 0.5 seconds. At 0.5 seconds it slopes downward on a straight line to the point 1.5,-0.5. It turns and is horizontal from 1.5 seconds to 2 seconds. At 2 seconds it turns upward and goes on a straight line to the point 3.5, -0.125. It remains at this voltage from 3.5 to 4 seconds at which time it turns upward again to the point 4.5, 0.625. It remains at 0.625 volts from 4.5 to 5 seconds. End verbal description.
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