Hi Guys... i'm trying to learn diff.eq on my own and i'm stuck on a problem and I don't even know where or how to begin: the problem is: the pacemaker shown in the figure (first attatchment) is made up of an electric battery, a small capacitor, and the heart which functions like a resistence in the circuit. When the commuter S connects to P the capacitor charges, when S is connected to Q the capacitor discharges sending an electric shock to the heart. During this time the electric tension E applied to the heart is given by: (second attatchment). The resistance and the capacitance are both constant... what is: E(t)= ? E(t1) = Eo Would it be a first order linear equation? Is it homogenous? What would be the value of the initial voltage? - i translated it directly from spanish so if further clarifying of the problem is needed please let me know.