  NDcost - generic external for optim computing gradient using finite differences
  bvode - boundary value problems for ODE
  bvodeS - simplified call of bvode
  dasrt - DAE solver with zero crossing
  dassl - differential algebraic equation
  datafit - Parameter identification based on measured data
  derivative - approximate derivatives of a function
  fit_dat - Parameter identification based on measured data
  fsolve - find a zero of a system of n nonlinear functions
  impl - differential algebraic equation
  int2d - definite 2D integral by quadrature and cubature method
  int3d - definite 3D integral by quadrature and cubature method
  intc - Cauchy integral
  intg - definite integral
  intl - Cauchy integral
  karmarkar - karmarkar algorithm
  leastsq - Solves non-linear least squares problems
  linpro - linear programming solver
  lmisolver - linear matrix inequation solver
  lmitool - tool for solving linear matrix inequations
  lsqrsolve - minimize the sum of the squares ofnonlinear functions, levenberg-marquardt algorithm
  numdiff - numerical gradient estimation
  ode - ordinary differential equation solver
  ode_discrete - ordinary differential equation solver, discrete time simulation
  ode_optional_output - ode solvers optional outputs description
  ode_root - ordinary differential equation solver with root finding
  odedc - discrete/continuous ode solver
  odeoptions - set options for ode solvers
  optim - non-linear optimization routine
  qld - linear quadratic programming solver
  quapro - linear quadratic programming solver
  semidef - semidefinite programming