I have
with div --> // ("integer part" of division).
I wonder how to use piecewise-defined functions for calculating n(i) and Q(i).
This does not work:
r = 1
m = 7
n(i) = piecewise([([0,0], r//m), ((0,oo), 10*(n(i-1)-Q(i-1)*m))])
Q(i) = piecewise([([0,0], 0), ((1,oo), n(i)//m)])
print n(0)
print n(1)
print n(5)
