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Graphing a bivariate function
  Graphs (as a grid) a bivariate function.
2024.Jul.03 18:26:43
xlow, xupp Limits for x.
ylow, yupp Limits for y. •
nx, ny Number of x and y grid points. •
npar, P Function parameters. •
Show values ? Shows the graph points.

Graphs a bivariate function, as a grid (or mesh), via 'gnuplot' splot. The variables are varying in the limits given, in a grid.

The function is z = a arctan(b + x²) + c (x² + y²).  P = (a, b, c).

References: Plate: Graphmult

• 1861-06-10: Duhem, Pierre Maurice Marie (1916-09-14).

 
 
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Created: 2010-06-09 — Last modified: 2011-10-01