Add my answer to Exercise 2.45.

Included are the following 4 files:

	Exercise_2.45.pdf
	Exercise_2.45.scm
	Exercise_2.45.tm

Thank you!
							Lawrence R. Amlord
							   Jun 13th, 2013
							   Xi'an, China
Add my answer to Exercise 2.46.

Included are the following single file:

	Exercise_2.46.scm

Thank you!
							Lawrence R. Amlord
							   Jun 14th, 2013
							   Xi'an, China