Integration in N(A)-Level Additional Mathematics (4051): integration as the reverse of differentiation, the constant of integration, evaluating definite integrals using limits, and finding the area under a curve

An N(A)-Level Additional Mathematics (4051) overview of integration in the Calculus strand. How integration reverses the power rule, why the constant of integration matters, how to evaluate a definite integral by substituting limits, and how to find the area under a curve including regions below the axis, with links to every dot point.