7. Convergence. In the series below, a is a constant. Determine the values of a for which the series converges. Hint: One series uses a comparison with two p-series (one for a 0), one series uses the root test, and one series uses the ratio test. a) n=1 n=1 n=1 a" n! (n+2)! 1+ n 1+n VALUES OF a: VALUES OF a: VALUES OF a: