Answer Happy

T/F?
1. The Ratio Test can be used to show that a series is absolutely convergent. 2. If n→∞lim​∣∣​an​an+1​​∣∣​=10, then the series n=1∑∞​an​ is convergent. 3. The series n=1∑∞​(n4+1​−n2) is divergent. 4. Every power series n=0∑∞​an​xn converges at x=0.