Multiple Integrals
摘要
Recall that, as explained in (Baronti et al. in Calculus problems, Unitext, 101, La Matematica per il 3 + 2, Springer, 2016), the Riemann integral \(\smallint_{a}^{b} {f(x)}\) dx of a non negative bounded function \(f:[a,b] \to {\mathbb{R}}\) is meant to capture the area under its graph.