f(x)=0.1*x*x - cos(x)

x                  f(x)               
0                  -1                 
0.1                -0.9940042         
0.2                -0.9760666         
0.3                -0.9463365         
0.4                -0.905061          
0.5                -0.8525826         
0.6                -0.7893356         
0.7                -0.7158422         
0.8                -0.6327067         
0.9                -0.54061           
1                  -0.4403023