Riemann sums

Definition

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.

Definite Integral:

The definite integral represents the exact value of the area under a curve between two limits.