: Applied to determine the total charge or energy stored in components by calculating the area under waveform curves. Phasors & Complex Numbers

by Allan Edwin Richmond and Gary W. Hecht is the industry standard. This textbook, available through McGraw-Hill

The most famous application of the derivative in electronics is the current through a capacitor. $$ I = C \fracdVdt $$ This equation reads: "Current equals Capacitance times the rate of change of Voltage with respect to time."