The term "integrand" refers to the function being integrated within an integral. It represents what we want to find the antiderivative of.
A definite integral is an integral with specified limits of integration, resulting in a single numerical value.
An indefinite integral represents a family of functions that differ by a constant. It does not have specific limits of integration.
A Riemann sum is an approximation method for finding the area under a curve by dividing it into smaller rectangles and summing their areas.