二分-D - Can you solve this equation?

D - Can you solve this equation?

Now,given the equation 8*x^4 + 7*x^3 + 2*x^2 + 3*x + 6 == Y,can you find its solution between 0 and 100;
Now please try your lucky.

InputThe first line of the input contains an integer T(1<=T<=100) which means the number of test cases. Then T lines follow, each line has a real number Y (fabs(Y) <= 1e10);OutputFor each test case, you should just output one real number(accurate up to 4 decimal places),which is the solution of the equation,or “No solution!”,if there is no solution for the equation between 0 and 100.Sample Input
2

100

-4
Sample Output
1.6152

No solution!

 #include<iostream>

 #include<cmath>

 using namespace std;

 double f(double x){

     return (*pow(x,) + *pow(x,) + *pow(x,) + *x + );

 }

 int main()

 {

     int t;

     double m,n;

     scanf("%d",&t);

     while(t--){

         scanf("%lf",&m);

         if(f()>m||f()<m){

             printf("No solution!\n");

             continue;

         }

         double left = , right = , mid;

         while(fabs(f(mid)-m) > 1e-){

             mid=(left + right)/;

             if((f(mid) > m))     right = mid;

              else if(f(mid)<m)     left=mid;

         }

         printf("%.4lf\n",mid);

     }

     return ;

 }

巴特西

二分-D - Can you solve this equation?

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