> So you already know the particular area of the larger topic of mathematics that you need to look for So did the author of the paper. The paper’s title itself

> So you already know the particular area of the larger topic of mathematics that you need to look for So did the author of the paper. The paper’s title itself mentions the area under a curve. It would not have been difficult to find information about how to calculate an approximation of the area under a curve in the library.