Describe D’lambert’s ratio test

Describe the preliminary test used to determine whether a series diverges or not
Note that this test does not guarantee convergence if the limit = 0

Describe absolute convergence
Note that if a series converges but not absolutely, it is said to converge conditionally

Describe L’opital’s rule
If the limit of f(x) = lim g(x) = 0, we can take the limit of f’(x)/g’(x)