Readings
Read the lectures notes about the first four examples in the first section of Part 1 (examples of dynamical systems).
Homework
Due February 3
with the graphical method given in class. Check your result with a
numerical method.
) :
Starting from a rational value 
for
, show that 
is also a rational number.
In other words, write as the ratio of two integers which can be expressed
in terms of 
and 
.