python方程求解

 

 

 

from sympy import *
f = Symbol('f')

def func(x,y,x1,y1):
    
    return solve(x-(y1/y)*f-(f**2-y**2)**0.5,f)
'''
案例一：
方程組求解(x,y)
2x-y-3=0
3x+y-7=0
'''
# x = Symbol('x')
# y = Symbol('y')
# print(solve([2*x-y-3,3*x+y-7],[x,y]))

#print(solve(118-4.19*f-(f**2-15.5**2)**0.5),f)
x=111+28
y=21.3
x1=139
y1=41.3

func(x,y,x1,y1)