- #1
ArnfinnS
- 11
- 0
hi..i really need some help. we have that alpha(x,y,x) = 1/r , where r^= x^2 + y^2 + z^2
and where the fector field F = nabla alpha (gradient of alpha)
i calculated F to be :
(-xx^ + yy^+zz^)/r^3
but iam supposed to calculate the flux integral
I_s F*n dS
but i don't know how to find the normal vector n. can anyone help me with that?
(you don't need to calculate it, i just need hints of how i can find it.)
PS ..s is a area without the point (0,0,0)
and where the fector field F = nabla alpha (gradient of alpha)
i calculated F to be :
(-xx^ + yy^+zz^)/r^3
but iam supposed to calculate the flux integral
I_s F*n dS
but i don't know how to find the normal vector n. can anyone help me with that?
(you don't need to calculate it, i just need hints of how i can find it.)
PS ..s is a area without the point (0,0,0)