$$\int^\infty_1\frac{1}{x^{1+1/x}}dx$$
I'm preparing for exams. I would also like to know what are some commonly used methods to show an improper integral diverges?
$$\int^\infty_1\frac{1}{x^{1+1/x}}dx$$
I'm preparing for exams. I would also like to know what are some commonly used methods to show an improper integral diverges?