lim(x→0)(1/x)*(e^-1/x)的值要步骤,

问题描述:

lim(x→0)(1/x)*(e^-1/x)的值要步骤,

当x从左边趋向0lim(x→0⁻) (1/x)e^(- 1/x),令y = - x,y→0⁺= lim(y→0⁺) 1/(- y) * e^(1/y)= lim(y→0⁺) - [e^(1/y)]/y → 负无穷大当x从右边趋向0lim(x→0⁺) (1/x)e^(- 1/x),令y = 1...