The decay of voltage, v volts, across a capacitor at time t seconds is given by v = 250e -t/3 . Draw a graph showing the natural decay curve over the first 6 seconds. From the graph, find (a) the...

The decay of voltage, v volts, across a capacitor at time t seconds is given by v = 250e
^-t/3. Draw a graph showing the natural decay curve over the first 6 seconds. From the graph, find (a) the voltage after 3.4 s and (b) the time when the voltage is 150V

Plot a graph of y =

e -1.5x over a range x =
^-1.5
to x = 1.5 and then determine the value of y when x = -0.8 and the value of x when y = 3.5