UVa OJ Board

Hello,I get WA many times. But I really don't know what's wrong in this code. I think it should be a stupid mistake, but I can't find it.... help me if you can,thank you~ #include <stdio.h> #include <stdlib.h> #include <math.h> #include <string.h> //p*e-x + q*sin(x) + r*cos(x) + s*tan(x) + t*x2 + u ...