code: public static void divide(DMatrixD1 a , double alpha)
      {
          final int size = a.getNumElements();
  
          for( int i = 0; i < size; i++ ) {
              a.data[i] /= alpha;
          }
      }
docs: <p>
  Performs an in-place element by element scalar division with the scalar on bottom.<br>
  <br>
  a<sub>ij</sub> = a<sub>ij</sub>/&alpha;
  </p>
  
  @param a The matrix whose elements are to be divided.  Modified.
  @param alpha the amount each element is divided by.