anlimn→∞an{an}C or Dlimn→∞(−1)nan{(−1)nan}C or D∑anAC, CC, or D∑(−1)nanAC, CC, or D4n!2n∞DDNEDDD(n+2)3nn!0C0CACAC4n(3n)n0C0CACAC1(2n+1)!0C0CACAC