If f(x) = 6x – x2, x ∈ [0, 2] and $g(x)=\{\begin{array}{l}minf(t),0\le <!--\; \le \; -->t\le <!--\; \le \; -->x,x\in <!--\; \in \; -->[0,1]\\ 3+x,x\in <!--\; \in \; -->[1,2]\end{array}$ Then number of points where g(x) is not differentiable is