Figure 5. Definition of the mathematical integral. In calculus, the “integral” of a function is “the area under the graph” of that function. Figure 5 shows an arbitrary complex function of time and ...

Now that function-theory is fairly well developed, it is much easier than it used to be to discuss in an orderly way the elementary problems of explicit integration. By showing how this can be ...

Integrals is the first chapter in book 2 and covers the branch of calculus that deals with finding out the numerical values of the area under the graph of a function for some interval. Integration ...