code: public static void scale( double alpha , DMatrix3x3 a , DMatrix3x3 b ) {
          b.a11 = a.a11*alpha; b.a12 = a.a12*alpha; b.a13 = a.a13*alpha;
          b.a21 = a.a21*alpha; b.a22 = a.a22*alpha; b.a23 = a.a23*alpha;
          b.a31 = a.a31*alpha; b.a32 = a.a32*alpha; b.a33 = a.a33*alpha;
      }
docs: <p>
  Performs an element by element scalar multiplication.<br>
  <br>
  b<sub>ij</sub> = &alpha;*a<sub>ij</sub>
  </p>
  
  @param alpha the amount each element is multiplied by.
  @param a The matrix that is to be scaled.  Not modified.
  @param b Where the scaled matrix is stored. Modified.