/// <summary>
/// Calculates difference from vector (minuend - subtrahend = difference).
/// </summary>
/// <param name="subtrahend">Subtrahend value.</param>
/// <returns>Difference.</returns>
public Vector DifferenceBy(double subtrahend)
{
Vector result = this;
result.I = result.DifferenceByI(subtrahend);
result.J = result.DifferenceByJ(subtrahend);
result.K = result.DifferenceByK(subtrahend);
return(result);
}