Fix#2

Closed

guanidene wants to merge 3 commits intoAllenDowney:masterfrom

Commits on Feb 3, 2014

fixed a minor mathematical error in trunk/book.tex. I has raised an issue for it here - AllenDowney#1
guanidene
committed
[code/thinkdsp.py] fixed working of Signal.make_wave method, which previously worked correctly only for "start=0" argument. Now it works correctly for any value of "start" argument
guanidene
committed
fixed a bug caused by the erroneous nature of the division operator.
guanidene
committed