02-13-2012, 07:57 PM
02-13-2012, 08:15 PM
On W|A that's nicer.
02-14-2012, 01:59 AM
Today's formula for the gnuplot
set xrange [ -1.37445 : 1.37445 ]
set yrange [ -1.17810 : 1.57080 ]
set zrange [ -1.00000 : 0.00000 ] reverse
set isosamples 97, 73
set xtics 0.785398
set ytics 0.785398
set ztics 1.0
set view 13, 337
#set pm3d
f(x, y) = ((x**2+y**2-1)**3 - x**2*y**3)
splot f(x, y) title "(x^2 + y^2 - 1)^3 - x^2 y^3 = 0"
Happy Valentine.
Lyuka