Power Rule: The power rule states that when differentiating a variable raised to a constant power, you can bring down that power as a coefficient and reduce the exponent by 1.
Trigonometric Identity: A trigonometric identity relates one trigonometric function to another, often simplifying calculations or solving equations involving trigonometric functions.
Exponential Function: An exponential function has the form f(x) = ab^(cx), where b is a positive constant greater than 1.