Dresden, July 31rst, 2001
Dear Sir or Madame,
I have a field of experimental data u(x, y). The experimental data u are taken
nonequidistantly in both directions x and y. I would like to calculate the derivatives
d u / d x and d u / d y. It is know that du / d x is about two orders of magnitute
smaller than d u / d y. Additionally we have to consider a certain experimental error
for u, x and y. Does MATHEMATICA provide a tool for this problem ?