Using difference method and collocation point method, this paper studies the bending problem for rectangular thin plates with mixed boundary.

综合应用差分法和配点法，研究了混合边界矩形薄板的弯曲问题。

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By optimizing for the problem of single point collocation, it proves that the optimization method is effective, and will has some reference to the problem of locating multiple points.

通过对单点并置问题的优化，证明了该优化方法的有效性，并对多点配置问题也具有一定的参考价值。

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