set zeroaxis
set xrange [-2:2]
set yrange [-10:10]
set title 'Grafico della funzione $f(x)=x(x-1)^2$'
set xtics -2,0.5,2
set ytics -10,1,10
set xlabel '$x$'
set ylabel '$y$'
set label '$[x_0,f(x_0)]$' at 0.25,2
plot x*(x-1)**2, -x/3+4/27