f(x) = SIN(x)^2 + 1/2·COS(x)
[x, f(x);
0, 0.5;
0.5, 0.6686401280;
1, 0.9782245712;
1.5, 1.030364849;
2, 0.6187483921;
2.5, -0.04240290050;
3, -0.4750813916;
3.5, -0.3451794708;
4, 0.2459282064;
4.5, 0.8501672312;
5, 1.061366857;
5.5, 0.8521220381;
6, 0.5581581639;
6.5, 0.5345704221;
7, 0.8085825180]