section 2.2.1
section 2.2.2
first part of section 2.2.3
Miller-Rabin test prime
second part of section 2.2.3
section 2.2.4
fast-expt
deriv version 2
deriv version 3
section 2.3.1
section 2.3.2
section 2.3.3
section 2.3.4
complex
all provided code
export functions from ch2support.scm
revert ch2support.scm
section 2.4.3
section 2.5
section 3.1