[lengxueshen]

x=[0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
y=[-0.44 1.97 3.28 6.16 7.08 7.34 7.66 9.56 9.48 9.30 11.2];
a = linspace(0,1.0,100);
b = interp1(x,y,a,'cubic');
plot(a,b,x,y,'cubic');