6.6.9  Converting box constraints from matrix to interval form

The box_constraints command can convert bounds of given variables from the matrix form to interval form.

• box_constraints takes two mandatory arguments:
  • vars, a list of variables [x₁,x₂,…,x_n].
  • bnds, a matrix with n rows and two columns in which the kth row contains the lower and upper bound l_k and u_k of x_k, respectively.
• box_constraints(vars,bnds) returns (x₁=l₁..u₁,x₂=l₂..u₂,…,x_n=l_n..u_n), i.e. the variables and their ranges contained in a single sequence.

Example