0_0_39337365_17149.cpp: In function 'double f(double, double)': 0_0_39337365_17149.cpp:6:16: error: 'pow' was not declared in this scope 6 | return 6 * pow(x, 7) + 8 * pow(x, 6) + 7 * pow(x, 3) + 5 * pow(x, 2) - y * x; | ^~~