#!/usr/bin/env python3fromsympyimport plot, solve
fromsympy.abcimport x, y
print('5.')
eqs = [
x **2+ y **2/2-1,
x **2/4+ y **2-1,
x **2/8+ y **2/4-1,
x **2/3+ y **2/6-1,
]
ys = []
for eq in eqs:
ys += solve(eq, y)
p = plot(*ys,
(x, -3, 3),
ylim=(-3, 3),
legend=True,
show=False)
colors = ['red', 'green', 'blue', 'brown', 'orange',
'purple', 'pink', 'gray', 'skyblue', 'yellow']
for o, color inzip(p, colors):
o.line_color = color
p.save('sample5.png')
p.show()
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