Decide whether each of the following series converges. If a given series converges, compute its sum. Otherwise, enter INF if it diverges to infinity, MINF if it diverges to minus infinity, and DIV otherwise.


1. $$\sum_{n=1}^\infty\left(\sin\left(\frac{-2}{n}\right) -\sin\left(\frac{-2}{n+1}\right)\right)$$
2. $$\sum_{n=1}^\infty\left(e^{8 n} - e^{8 (n+1)}\right)$$
3. $$\sum_{n=1}^\infty\left(\sin(-2 n) - \sin(-2 (n+1))\right)$$