# Derive Green's theorem with divergence formula.

• March 26th 2010, 02:45 AM
Penguin91
Derive Green's theorem with divergence formula.
Hi,

Starting with the Divergence Theorem and two smooth scalar functions
f and g, a closed surface S enclosing a volume V , derive the First Green's formula.
$
\int \int (f\nabla g) \cdot ndS = \int \int \int(f\nabla^2g + \nabla f \cdot \nabla g dV$