为什么log(xy)= log(x)+ log(y)在SymPy中不起作用？
我试过这个:
from sympy import *
var('x y')
print(simplify(log(x*y)))
print(expand(log(x*y)))
print(collect(log(x*y),x))
print(solve(log(x*y),x))
# log(x*y)
# log(x*y)
# log(x*y)
# [1/y]