In this example, our function is `V(t) = 2t + 8` which has slope `2` and `V`-intercept `8`.

The signal is only turned on between `t = 3` and `t = 5`. The rest of the time it is off.

So our voltage function will be:

`V(t) ` `= (2t+8) ·{u(t − 3)− u(t − 5)}`

The graph is as follows:

2465101520tV(t)Open image in a new page

Graph of `V(t) = (2t+8) ·{u(t − 3)− u(t − 5)}`. The dashed line is `V(t) = 2t + 8`.