Riemann sum
The Riemann sum is a mathematical concept used to approximate the value of a Definite integral, which is a fundamental concept in Calculus. It is named after the German mathematician Riemann. The Riemann sum is calculated by dividing the area under a Curve into small Rectangles and summing the areas of these rectangles. The more rectangles used, the more accurate the approximation will be. This concept is crucial in understanding Limits and Infinite series, and has numerous applications in Physics, Engineering, and Economics. The Riemann sum is also closely related to the concept of Numerical analysis and Signal processing.