When we compute a definite integral, we first find an antiderivative and then evaluate at the limits of integration. It is convenient to first display the antiderivative and then evaluate. A special notation is often used in the process of evaluating definite integrals using the Fundamental Theorem of Calculus. Instead of explicitly writing {{MATH_60}}, we often write {{MATH_61}} meaning that one should evaluate {{MATH_62}} at {{MATH_63}} and then subtract {{MATH_64}} evaluated at {{MATH_65}} {{MATH_66}}