| 115 | // ---------------------------------------------------------------------------------------- |
| 116 | |
| 117 | double simple ( const matrix<double,2,1>& x) |
| 118 | { |
| 119 | ++total_count; |
| 120 | return 10*x(0)*x(0) + x(1)*x(1); |
| 121 | } |
| 122 | |
| 123 | matrix<double,2,1> der_simple ( const matrix<double,2,1>& x) |
| 124 | { |