calculus

Calculus  covers core concepts like limits, derivatives (rates of change), and integrals (areas), explaining how they analyze change, from instantaneous slopes (derivatives) using rules like the power/chain rules, to accumulation (integrals) and their applications in science and engineering, often starting with basic functions and building to multivariable calculus and series. 

Key  resources include cheat sheets and lecture notes from universities, detailing formulas, rules (power, product, chain), and step-by-step methods like the four-step derivative rule