#include <mtl/dense1D.h>#include <mtl/mtl.h>#include <mtl/utils.h>/*  example output:  [7,7,7,7,7,7,7,7,7,7]  */intmain(){  using namespace mtl;  //begin  dense1D< double > x(10,2);  dense1D< double > y(10,3);  add(scaled(x,2), y, y);  print_vector(y);  //end  return 0;}