Problem

D is the solid inside the cylinder x2+y2=9, between the planes z=7 and z=x+17. Use the Divergence Theorem to find the flux of the vector field F(x,y,z)=xyy2+z2,5y+ez3,3zx2coty over the surface of D. Consider cylindrical coordinates. Write the exact answer. Do not round.

Answer

Expert–verified
Hide Steps
Answer

Calculate the triple integral using Divergence Theorem: Ddiv(F)dV=02π037rcosθ+17div(F)rdzdrdθ.

Steps

Step 1 :Define cylindrical coordinates transformation: (x,y,z)=(rcosθ,rsinθ,z) with 0r3, 0θ2π, 7zrcosθ+17.

Step 2 :Find the divergence of F: div(F)=F=x(xyy2+z2)+y(5y+ez3)+z(3zx2coty).

Step 3 :Calculate the triple integral using Divergence Theorem: Ddiv(F)dV=02π037rcosθ+17div(F)rdzdrdθ.

link_gpt