Add my answer to Exercise 1.42.

Included are the following 4 files:

	Exercise_1.42.pdf
	Exercise_1.42.scm
	Exercise_1.42.tm
	Test_for_Exercise_1.42.scm

Thank you!
							Lawrence R. Amlord
							   May 16th, 2013
							   Xi'an, China
Add my answer to Exercise 1.43.

Included are the following 4 files:

	Exercise_1.43.pdf
	Exercise_1.43.scm
	Exercise_1.43.tm
	Test_for_Exercise_1.43.scm

Thank you!
							Lawrence R. Amlord
							   May 16th, 2013
							   Xi'an, China
Add my answer to Exercise 1.44.

Included are the following 2 files:

	Exercise_1.44.pdf
	Exercise_1.44.tm

Thank you!
							Lawrence R. Amlord
							   May 16th, 2013
							   Xi'an, China