📅  最后修改于: 2022-03-11 14:46:46.336000             🧑  作者: Mango
代码示例2
from sympy import Symbol, Derivative
x= Symbol('x')
function= x**4 + 7*x**3 + 8
deriv= Derivative(function, x)
deriv.doit().subs({x:4})