qqp question1: How I find the sum of this series? [math]\displaystyle \sum_{k=1}^{\infty} \frac 1 k \ln(\frac 1 k + 1)[/math] question2: How do you find the sum of series [math]\sum\limits_{n=1}^{\infty}\frac{(-1)^n}{n(4n^2-1)}[/math]?