Python| Sympy Ellipse.equation() 方法
在 sympy 中,函数
Ellipse.equation()
用于制作给定椭圆的方程。 Syntax: Ellipse.equation(x='x', y='y', _slope=None)
Parameters:
x : Label for the x-axis. Default value is ‘x’.
y : Label for the y-axis. Default value is ‘y’.
_slope : The slope of the major axis. Ignored when ‘None’.
Returns: equation : sympy expression
示例 #1:
# import sympy, Point and Ellipse
from sympy import Point, Ellipse
from sympy.abc import x, y
# using Ellipse()
e1 = Ellipse(Point(1, 0), 3, 2)
# using equation()
eq1 = e1.equation(x, y);
print(eq1)
输出:
y**2/4 + (x/3 - 1/3)**2 - 1
示例 #2:
# import sympy, Point and Ellipse
from sympy import Point, Ellipse
from sympy.abc import x, y
# using Ellipse()
e2 = Ellipse(Point(0, 0), 3, 2)
# using equation()
eq2 = e2.equation(x, y);
print(eq2)
输出:
x**2/9 + y**2/4 - 1