Which series represents ∫11−xdx\int \frac{1}{1-x} dx∫1−x1dx?
∑n=0∞xn+1n+1\sum_{n=0}^{\infty} \frac{x^{n+1}}{n+1}∑n=0∞n+1xn+1
∑n=0∞xnn\sum_{n=0}^{\infty} \frac{x^n}{n}∑n=0∞nxn
∑n=0∞xn+1\sum_{n=0}^{\infty} x^{n+1}∑n=0∞xn+1
∑n=1∞xnn\sum_{n=1}^{\infty} \frac{x^n}{n}∑n=1∞nxn