Regular Falsi
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#include<stdio.h> #include #include<math.h> float f(float x) { return(sin(x)-x+2); } void main() { float x1,x2,x3,y1,y2,y3,acc; int i,n; clrscr(); printf("\n enter the value of initial guess x1="); scanf("%f", &x1); printf("\n enter the value of another guess x2="); scanf("%f", &x2); printf("\n enter the number of iterations ="); scanf("%d", &n); y1=f(x1); y2=f(x2); while(y1*y2>0) { printf("\n enter the value of x1 again ="); scanf("%f", &x1); printf("\n enter value of x2 again ="); scanf("%f", &x2); y1=f(x1); y2=f(x2); } for(i=1;i<=n;i++) { x3=(((x2*y1)-(x1*y2))/(y1-y2)); y3=f(x3); if(y1*y3<0) { x2=x3; y2=y3; } else
{ x1=x3; y1=y3; } } printf("\n the root x3=%f", x3); getch(); }
OUTPUT Enter the value of initial guess x1=2 Enter the value of initial guess x2=3 Enter the number of iterations =5 The root x3 =2.554196
{ x1=x3; y1=y3; } } printf("\n the root x3=%f", x3); getch(); }
OUTPUT Enter the value of initial guess x1=2 Enter the value of initial guess x2=3 Enter the number of iterations =5 The root x3 =2.554196
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