环境说明:Python3.7.2+Jupyter Notebook
示例1(求解一元三次方程):
import sympy as sp # 导入sympy包x = sp.Symbol('x') # 定义符号变量f = x**3 - 3*x**2 + 3*x - 9/16 # 定义要求解的一元三次方程x = sp.solve(f) # 调用solve函数求解方程x # solve函数的返回结果是一个列表# x的值为[0.240852757031084,1.37957362148446-0.657440797623999*I,1.37957362148446+ 0.657440797623999*I]
示例2(求解一元二次方程):
import sympy as spx = sp.Symbol('x')f = x**2 - x + 3/16x = sp.solve(f)x# x的值为[0.250000000000000, 0.750000000000000]