code: public Vec transposeMultiply(double c, Vec b)
      {
          DenseVector toReturns = new DenseVector(this.cols());
          this.transposeMultiply(c, b, toReturns);
          return toReturns;
      }
docs: Creates a new vector equal to <i><b>x</b> = A'*<b>b</b>*c</i>
  @param c the scalar constant to multiply by
  @param b the vector to multiply by
  @return the new vector equal to <i>A'*b*c</i>