1. The net charge through a cross section of a circuit element is given by q(t)=2t+t^2 C. As usual, t is in seconds. Find the current through the element in amperes.
2. the current through a given circuit element is given by i(t)=2e^-t A. As usual, time t is in seconds. Find the net charge that passes through the element in the interval from t=0 to t=infinity.