Take as given the formula from Green's Theorem: V.f dx dy = | f ·n ds, where D is a region in the plane and C its boundary; f is a vector-valued function of x and y; n is the outward normal to the boundary and ds the element of arc length on the boundary. Use it to derive Green's First Identity, du (Vv . Vu + vAu) dx dy = || ds an where u and v are twice-differentiable functions on D.
Take as given the formula from Green's Theorem: V.f dx dy = | f ·n ds, where D is a region in the plane and C its boundary; f is a vector-valued function of x and y; n is the outward normal to the boundary and ds the element of arc length on the boundary. Use it to derive Green's First Identity, du (Vv . Vu + vAu) dx dy = || ds an where u and v are twice-differentiable functions on D.
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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