Posted by alana on .
how do you find the triple integral
xy dV
where E is the solid tetrahedron with vertices (0,0,0),(7,0,0),(0,1,0),(0,0,8)?

math 
Count Iblis,
Start with computing the limits on z for fixed x and y (i.e. what is the height of the tetrahedron as a function of x and y).