An electrical circuit switches instantaneously from a 3 volt battery to a 23 volt battery 6 seconds after being turned on. Sketch on a sheet of paper a graph the battery voltage against time. Then fill in the formulas below for the function represented by your graph.

Question

For t< , V(t)=
For t≥ , V(t)= .

At what point or points is your function discontinuous?
t=

Answer 1

6, 23
0, 3

7