Created
January 24, 2019 06:30
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| #include<stdio.h> | |
| #include<math.h> | |
| float f(float x){ | |
| return x*log10(x)-1.2; | |
| } | |
| float df(float x){ | |
| return log10(x) + 0.434293; | |
| } | |
| int main(){ | |
| int a,b,maxitr,itr; | |
| float aerr,x0,x1,h; | |
| printf("please enter the valueof a,b :"); | |
| scanf("%d%d",&a,&b); | |
| printf("\n please enter the maxitr and aerr: "); | |
| scanf("%d%f",&maxitr,&aerr); | |
| if (f(a)*f(b)<0){ | |
| x0 = (a+b)/2; | |
| for(itr = 1;itr<=maxitr;itr++){ | |
| h= f(x0)/df(x0); | |
| x1= x0-h; | |
| printf("\n itr no. %d , x = %f ", itr,x1); | |
| if(fabs(h)<aerr){ | |
| printf("\n After %d no. of itr by using N-R Method is %f",itr,x1); | |
| return 0; | |
| } | |
| x0 = x1; | |
| } | |
| printf("\n Max itr is not sufficient "); | |
| } | |
| else{ | |
| printf("\n there are no roots"); | |
| } | |
| } |
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