An indefinite integral represents an antiderivative of a function without specifying any bounds. It gives us a family of functions that differ only by a constant.
The fundamental theorem of calculus establishes the relationship between differentiation and integration. It states that if we differentiate an antiderivative, we obtain the original function.
Area Under Curve: The area under curve refers to the total area enclosed by a curve on a graph. In calculus, it often involves finding definite integrals to determine this area accurately.