If S is the surface of the sphere x2 + y2 + z2 = r2, then
So \(\rm \iint_c(a x \vec{\imath}+b y \vec{\jmath}+c z \vec{k}) \cdot \hat{n} \ {ds}\) = _________.
1
\(\frac{4}{3} \pi r^3(\mathrm{a}+\mathrm{b}+\mathrm{c})\)
2
4 πr2(a + b + c)
3
\(\frac{2}{3} \pi r^2(\mathrm{a}+\mathrm{b}+\mathrm{c})\)
4
2 πr2(a + b + c)