1. Array plot library. Develop your own plot methods that improve upon those in StdStats. Be creative! Try to make a plotting library that you think will be useful for some application in the future....

1. Array plot library. Develop your own plot methods that improve upon those in StdStats. Be creative! Try to make a plotting library that you think will be useful for some application in the future.

2. What happens if you call factorial() with a negative value of n? With a large value of, say, 35?

3. Write a recursive function that takes an integer n as its argument and returns ln (n!).