%x1=0:0.1:1;
x1=[0.0833?	0.1667?	0.2500?	0.3333?	0.4167?	0.5000?	0.5833?	0.6667?	0.7500?	0.8333?	0.9167?	1.0000?

?];
y=[0.0000?	0.0000?	0.0000?	0.0000?	0.0072?	0.0144?	0.0216?	0.0576?	0.1655?	0.3741?	0.5899?	1.0000?

?];
x2=0:0.001:1;

%?c=polyfit（x1y7）;
c=fit（x1‘