Logistic 
0.9, 0.99 
1.5, 1.5 
2.4, 2.9 
3.1, 3.5 
3.55, 3.57 
3.6, 3.7 
3.8, 3.825 
3.826, 3.827 
3.828, 3.829 
3.846, 3.999 
Tent 
1.2, 1.32 
1.4, 1.5 
1.7, 1.8 
1.9, 1.999 



s = 1.5. The nonzero fixed point is stable, so why do the iterates run down toward
(0,0)? Because here we started with x = 0.5, so the iterates decrease to the fixed
point, which consequently lies in bin 1. 
Here we take the same value of s, but start from x = 0.01 so the iterates
increase toward the fixed point. Several iterations are needed to get out of bin 1, a few
are in bin 2, a few in bin 3, and the bulk in bin 4. 
