My question is:

Compute the flux of the vector field, , through the surface, S.

and S is the part of the surface above the disk oriented downward.

My answer so far is

is this correct?

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- Apr 21st 2009, 01:20 PMTheRekzcalculating flux through a surface
My question is:

Compute the flux of the vector field, , through the surface, S.

and S is the part of the surface above the disk oriented downward.

My answer so far is

is this correct? - Apr 21st 2009, 03:28 PMCalculus26
yes but for one cosmetic change

in you next to last integral you should have replaced dA with drdtheta since dA is rdrdtheta

--in your last integral dA should be dtheta - Apr 21st 2009, 03:30 PMTheRekz
ok my bad , edited my original post, however my final result that I got is:

, and this is a web assign question and it doesn't accepts it (marks it as wrong) - Apr 21st 2009, 03:34 PMCalculus26
Aah-- I didn't see it either r varies from 0 to 2 not 4

The radius of the disk is 2 - Apr 21st 2009, 03:36 PMTheRekz
I tried and it doesn't work as well

- Apr 21st 2009, 03:38 PMCalculus26
In your first integral you have 7x +7y +z --should be 7x+7y+7z

- Apr 21st 2009, 03:41 PMTheRekz
thanks I got it now :)