code: public static void divide(double alpha , DMatrixD1 a , DMatrixD1 b)
      {
          b.reshape(a.numRows,a.numCols);
  
          final int size = a.getNumElements();
  
          for( int i = 0; i < size; i++ ) {
              b.data[i] = alpha/a.data[i];
          }
      }
docs: <p>
  Performs an element by element scalar division with the scalar on top.<br>
  <br>
  b<sub>ij</sub> = &alpha;/a<sub>ij</sub>
  </p>
  
  @param alpha The numerator.
  @param a The matrix whose elements are the divisor.  Not modified.
  @param b Where the results are stored. Modified.