Fuente TeX:

V=\int_0^1\int_1^2 x^2+y^2dydx = \int_0^1 yx^2+\frac{y^3}{3} \bigg|_{y=1}^{y=2}dx =\int_0^1\frac{8}{3}+2x^2-\frac{1}{3}-x^2dx = \int_0^1 \frac{7}{3}+x^2dx