Riemann sums are methods used to estimate or approximate the area under curves by dividing it into multiple rectangular regions and summing their areas together.
Related terms
Upper Sum: An upper sum is an approximation of an integral where rectangle height is determined by taking the maximum value of f(x) within each subinterval.
Lower Sum: A lower sum is an approximation of an integral where rectangle height is determined by taking the minimum value of f(x) within each subinterval.