Lim molecule e - (1 + x) ^ 1 / x, denominator X Because I can't understand the problem-solving process in the book, I ask if there are other ways to solve the problem

Lim molecule e - (1 + x) ^ 1 / x, denominator X Because I can't understand the problem-solving process in the book, I ask if there are other ways to solve the problem

1. The molecular limit is equal to E-E and the denominator limit is equal to 0