Помогите решить на языке C (СИ).

include "stdio.h"

include "math.h"

int main()

double y, x, a, b;

scanf("%lf%lf%lf", amp;x, amp;a, amp;b);

y = cos(2 * x) + sin(x - 3);

printf("y = %lf", y);

if (cos(2 * a) + sin(x - a) gt; cos(2 * b) + sin(b - 3))

 printf("\nmax - a");

else if (cos(2 * a) + sin(x - a) lt; cos(2 * b) + sin(b - 3))

printf("\nmax - b");

else

 printf("\nin a = in b");