2D Coordinate Changes

More powerful simplifications are possible in 2D.

a u_xx + 2 b u_xy + c u_yy + d = 0

• Old independent coordinates x,y
• New independent coordinates

Writing out

using :

Writing out :

11/01/99 0:30:54 11/01/99 0:32:15 11/03/99 0:02:12 11/03/99 0:27:13