2. let $\\mathcal{u}$ be the solid tetrahedron bounded by the planes $x = 0$, $y = 1$, $z = 0$, and $x +…

2. let $\\mathcal{u}$ be the solid tetrahedron bounded by the planes $x = 0$, $y = 1$, $z = 0$, and $x + 2y+3z = 8$. (the vertices of this tetrahedron are $(0,1,0)$, $(0,1,2)$, $(6,1,0)$, and $(0,4,0)$). write the triple integral $\\iiint_{\\mathcal{u}}f(x,y,z)dv$ as an iterated integral.
Answer
Explanation:
Step1: Determine the range of (y)
The planes (y = 1) and by considering the intersection of the planes, the range of (y) is from (y = 1) to (y=4).
Step2: Determine the range of (x) for a given (y)
From the plane (x + 2y+3z=8) and (z = 0), we get (x=8 - 2y). Also, (x\geq0). So for a given (y), (x) ranges from (x = 0) to (x=8 - 2y).
Step3: Determine the range of (z) for given (x) and (y)
From the plane (x + 2y+3z=8), we can solve for (z) as (z=\frac{8 - x - 2y}{3}), and (z\geq0). So (z) ranges from (z = 0) to (z=\frac{8 - x - 2y}{3}).
Answer:
(\int_{1}^{4}\int_{0}^{8 - 2y}\int_{0}^{\frac{8 - x - 2y}{3}}f(x,y,z)dzdxdy)