👉 In the context of mathematics, a "coster" refers to a mathematical object that is used in the calculation of the area under a curve. The term is derived from the Latin word "coster," which means "to measure." In this sense, a "coster" could be an imaginary line segment that connects two points on the curve, and it represents the area under the curve between these points. The costers can be used in various applications such as calculus, optimization problems, and