What is $\lim_{n \to \infty} 1+ 1/2 + 1/3 +\dots +1/n$. What is $\lim_{n \to \infty} 1- 1/2 + 1/3 +\dots +1/(2n-1)-1/(2n)?$
I feel like $\lim_{n \to \infty} 1+ 1/2 + 1/3 +\dots +1/n$ should be equal with 2, but I'm not sure. Any help is hugely appreciated, because I've never done such exercises before and I couldn't find how to approach them.