Can you solve this equation?
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Can you solve this equation?
Time Limit : 2000/1000ms (Java/Other) Memory Limit : 32768/32768K (Java/Other)
Total Submission(s) : 113 Accepted Submission(s) : 69
Problem Description
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.
Now please try your lucky.
Input
The 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);
Output
For 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
2100-4
Sample Output
1.6152No solution!C语言程序代码/*简单的二分法题, */#include<stdio.h>#include<math.h>double f(double x){return 8*x*x*x*x+7*x*x*x+2*x*x+3*x+6;}int main(){int n,t,i;double l,r,mid,y;scanf("%d",&t);while(t--){scanf("%lf",&y);if(y<f(0)||y>f(100))printf("No solution!\n");else{l=0;r=100;mid=0;while(r-l>1e-10){mid=(l+r)/2;if(f(mid)-y>1e-10)r=mid;elsel=mid;}printf("%.4lf\n",r);}}return 0;}
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- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation
- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation?
- Can you solve this equation?
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