If dot is positive, (say if p=(1,0,0) and v=(1,0,0)), then the center
of mass always moves further away from where it starts, and the
nearest point happened in the past. Thus the answer is t=0.

On Wed, Sep 16, 2009 at 7:00 PM, Seedrick <[email protected]> wrote:
>
> Someone please tell me what is the problem in my code
> ...
>                else
>                {
>                        dmin= ap-sq(dot);
>                        dmin = sqrt(dmin);
>                        tmin = (fabs(dot))/mod;
>                }
>                printf("Case #%d: %.8lf %.8lf\n",i+1,dmin,tmin);

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