Finding the Step Response

1. Analyze the circuit at t=0^-: Find the capacitor voltage / inductor current.

2. Analyze the circuit at t=0⁺: The capacitor voltage / inductor current is the same as at t=0^-.

3. For the desired voltages / currents in the circuit:
   • Find the "initial value" at t=0⁺.
   • Find the "final value" as t -> infinity. (This is sometimes easier to find from the Thevenin equivalent circuit.)

4. Find the time constant, L_eq/R_Th or C_eq * R_Th:
   • Find the equivalent capacitance / inductance (if more than one capacitor / inductor).
   • Find the Thevenin resistance, R_Th, at the terminals of the capacitor / inductor.

5. Use the general formula for step response.