3. At s = 1.9, the tent map has two fixed points, but both are unstable.
in fact, all cycles are unstable. All points in [0,1] iterate to the interval
[T(1/2),T^{2}(1/2)] = [s/2,s - ((s^{2})/2)] = [.95,.095]; this
interval is the
attractor of all points in [0,1]. Here the dynamics are chaotic, so this is a
strange attractor. The basin of attraction of the strange attractor is the
interval [0, 1]. The only other attractor is -infinity; its basin is both the
intervals (-infinity, 0) and (1, infinity). The basin boundary is the points
0 and 1.

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