我想它们在Python/Sympy中是相等的:
实际上,
(在anaconda 64位、ipython笔记本、python 2.7、sympy0.7.6中)
我猜它们在Python/Sympy中是相等的:
from sympy import *
x = Symbol('x')
limit(sin(x)/x,x,0)
#(result 1)
limit(sin(1/x)*x,x,00)
#(result 0 !!!)
实际上,
让y = 1/x,极限(sin(1/x)*x,x,00) = 极限(sin(y)/y,y,0)
,对吗?(在anaconda 64位、ipython笔记本、python 2.7、sympy0.7.6中)