35 lines
528 B
C
35 lines
528 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define DUR 0.001
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double func(double x)
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{
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return (2*x*x*x)-(4*x*x)+3*x-6;
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}
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double dfs(double L, double Mid, double R)
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{
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int t;
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if(R-L < DUR) return R;
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if(func(L)*func(Mid) <=0)
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{
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t= dfs(L,(L+Mid)/2,Mid);
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}
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else if(func(Mid)*func(R) <=0)
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{
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t= dfs(Mid,(Mid+R)/2,R);
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}
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return t;
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}
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int main()
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{
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double a, b, c;
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scanf("%lf,%lf",&a,&c);
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b = (a+c)/2;
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printf("x=%6.2f\n",dfs(a,b,c));
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return 0;
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}
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