text: 'use strict';
  
  module.exports = [require('./derivative'),
  
  // simplify
  require('./simplify'),
  
  // polynomial
  require('./rationalize'),
  
  // decomposition
  require('./decomposition/qr'), require('./decomposition/lup'), require('./decomposition/slu'),
  
  // solver
  require('./solver/lsolve'), require('./solver/lusolve'), require('./solver/usolve')];