TY - JOUR TI - Numerical method to a class of boundary value problems AU - Qiu Yu-Yang JN - Thermal Science PY - 2018 VL - 22 IS - 4 SP - 1877 EP - 1883 PT - Article AB - A class of boundary value problems can be transformed uniformly to a least square problem with Toeplitz constraint. Conjugate gradient least square, a matrix iteration method, is adopted to solve this problem, and the solution process is elucidated step by step so that the example can be used as a paradigm for other applications.