pute the following limits. Provide reasoning for your answer (a) (9 points) lim (-1)" cos(n7) 71-+20 (b) (9 points) lim tan(#/4 + na) 2. (18 points) For which r does the series ) 42n+2 Converge? For these a values, what function 71=0 does the series converge to? 3. (18 points) Does the series (2n)! (3n)! converge or diverge? Provide reasoning for your answer. n=1