如何简化log(exp(exp(x)))
至exp(x)
这样的表达方式?它似乎适用于更简单的表达式,如exp(log(x))
=> x
。这是一个显示我迄今为止尝试过的最小例子:
import sympy
from sympy import exp, log
x = sympy.symbols('x')
a = exp(log(x))
print a
# Gives `x` automatically, no call to simplify needed
b = log(exp(exp(x)))
print sympy.simplify(b), sympy.powsimp(b,deep=True)
# Gives `log(exp(exp(x)))` back, expected `exp(x)`
答案 0 :(得分:3)
由于缺乏信息,这种情况正在发生。我想你想这样做:
In [7]: x = Symbol('x', real=True)
In [8]: (log(exp(exp(x)))).simplify()
Out[8]: exp(x)