Red component corresponds to partial derivative by x, blue corresponds to partial derivative by y, green depends on them in a some strange illogical way and added to make picture more lovely.
x ↦ 0.3663914416345010y² - 1.03747828322561xy -
1.50178812723409y + 1.16992005362711x² + 1.99643560701994x +
0.3626745632492520
y ↦ -1.02282315224122y² + 1.76994066384234xy +
0.3215114959922850y - 0.4038307575891870x² - 0.1628996674407880x +
1.49434629375527
Starting point (0,1;0,5); 50000 iterations; first 200 are not drawn. Click to get 300 dpi version.
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