- #1
jerzey101
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Homework Statement
The temperatur at the point (x,y,z) in a substance with conductivity K=6.5 is u(x,y,z)=2y2+2z2. Find the rate of heat flow inward across the cylindrical surface y2+z2=6, 0≤x≤4.
Homework Equations
F=-k∇u
-k∫∫s∇u*ds
The Attempt at a Solution
So F=-6.5(0,4y,4z)
I get lost with how to find n because it is not in the usual cylindrical form x2+y2=6. Please give me some guidance. Thank you.