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]