4. F(x, y, 2) = yĩ+ (z – y)7+ xk. S: The portion of the plane (S is the top of the tetrahedron with vertices (0,0,0), (6,0, 0), (0,6,0), and (0,0, 6).) x + y + z = 6 in the first octant (where x, Y, z > 0). z = 6 – x – Y 0 < x < 6 – y 0

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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A TILTED surface:
4. F(x, y, z) = y7+(z – y)7+ xk.
S: The portion of the plane
(S is the top of the tetrahedron with vertices (0,0,0), (6,0, 0), (0,6, 0), and (0,0,6).)
x + y + z = 6
in the first octant (where x, y, z > 0).
Equations/inequalities
for the surface: S:
z = 6 – x – y
0 < x < 6 – y
0 <y < 6
On S,
F.î =
F =
dS = V3 dx dy
the area on this tilted surface is v3 times the horizontal area dxdy
/| F . î dS =
S
Transcribed Image Text:A TILTED surface: 4. F(x, y, z) = y7+(z – y)7+ xk. S: The portion of the plane (S is the top of the tetrahedron with vertices (0,0,0), (6,0, 0), (0,6, 0), and (0,0,6).) x + y + z = 6 in the first octant (where x, y, z > 0). Equations/inequalities for the surface: S: z = 6 – x – y 0 < x < 6 – y 0 <y < 6 On S, F.î = F = dS = V3 dx dy the area on this tilted surface is v3 times the horizontal area dxdy /| F . î dS = S
Expert Solution
Solution:

The vector field is Fx, y, z=yi+z-yj+xk

The plane is x+y+z=6 in the first octant.

Then, we have fx, y, z=x+y+z-6

Obtain the normal vector:

n=ff=i+j+k1+1+1=13i+j+k

Fx, y, 6-x-y=yi+6-x-2yj+xk

 

Given: dS=3dxdy

 

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