Specifically, the concepts within calculus that deal with this are:
* Integral Calculus: This branch focuses on finding the total amount of a quantity, such as area, volume, or work, by summing up small, infinitesimal parts. This involves integrating functions to find their antiderivatives, which represent the cumulative effect of the function's rate of change.
* Differential Calculus: This branch focuses on the rate of change of a function, which is found by taking the derivative of the function. This can then be used to calculate the effect of small changes in the input variable on the output variable.
Therefore, both integral and differential calculus are essential in understanding and analyzing the cumulative effects of varying quantities.