010_lnx.c

Go to the documentation of this file.

#include <stdio.h>
 
int main(int argc, char *argv[])
{
    float lnx, x, num, fct, px;
    int i, den, n;
    do{
        printf("Intese el valor de x: ");
        scanf("%f", &x);
    }while(x<=0);
    do{
        printf("Ingrese el numero de terminos: ");
        scanf("%d", &n);
    }while(n<=0);
    for(i=0, px=(x-1)/(x+1), fct=px, lnx=0; i<n; i++)
    {
        lnx += fct;
        fct*= (2*i+1)*(px*px)/(2*i+3);
 
    }
    lnx*=2;
    printf("ln(%f) = %f\n", x, lnx);
    return 0;
}