Fuente TeX:

\iiint_{V} d \omega = \iiint_{V} (Div X) dxdydz = \iiint_{V} (2x + 1)dxdydz = \int_{0}^{6} dx \int_{0}^{4 - 2x/3} dy \int_{0}^{2 - x/3 - y/2} (2x + 1) dz = \int_{0}^{6} dx \int_{0}^{4 - 2x/3} (11x/3 - 2x^2/3 - xy + 2 -y/2) dy