1. Consider the sequence 9, 11, 13, 15, 17, 19... Compute the difference between successive terms and enter your answer as a list. (For example, if the sequence were 2, 5, 9, you would enter the comma separated list 3, 4 since 5-2=3 and 9-5=4).
    The sequence of successive differences is , which suggests that the original sequence (is/is not) growing linearly.

  2. Consider the sequence 9, 11, 13, 15, 17, 19... Compute the ratio between successive terms and enter your answer as a list. (For example, if the sequence were 2, 5, 9, you would enter the comma separated list 5/2, 9/5).
    The sequence of successive differences is , which suggests that the original sequence (is/is not) growing exponentially.

  3. Find a closed formula for the sequence 9, 11, 13, 15, 17, 19... Use as your index and start with , that is, .


  4. Find a closed formula for the sequence -9, 11, -13, 15, -17, 19... Use as your index and start with , that is, .

You can earn partial credit on this problem.