Problem Set One, CS257, Spring 1999


Due Wed Jan 27
turn in via
 ~cslab/bin/cs257-handin yourcode.scm
remember: runnable scheme code.  All comments in comments!

Exercises 1.2
	  1.3
	  1.4
	  1.5 [type a, b, c for alpha, beta, gamma]

Define a function AVE2 that takes two arguments and returns their
arithmetic average (ie their mean).  (AVE2 2 3) -> 2.5

Define a function AVE9 that takes nine arguments and returns their
arithmetic average (ie their mean).  (AVE9 1 2 3 4 5 6 7 8 9) -> 5


Define a non-trivial function that calculates something of personal
interest to you.  Please document it.  (The most interesting ones will
be shown in class - if yours is chosen and you don't want your name
mentioned, please say so in a comment.)

Extra Credit:

 try to figure out whether you should believe:

   the last digit returned by
	(EXPT 2 100)

   the first digit after the decimal point returned by:
	(SIN 1234567890)

   the first digit after the decimal point returned by:
	(SIN 1234567890123456789)