Definite Integral: The definite integral calculates the exact area under a curve between two points.
Antiderivative: An antiderivative is another term for an indefinite integral. It represents a family of functions that have the same derivative.
Fundamental Theorem of Calculus: This theorem connects differentiation and integration by stating that if F(x) is an antiderivative of f(x), then ∫f(x) dx from a to b equals F(b) - F(a).