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变换在几何问题中的应用
摘要：本文对正交变换、仿射变换、射影变换以及它们的特例的定义及相关性质进行了归纳和总结。讨论了它们在解数学问题以及在生活实际中的应用，并利用射影变换实现了2次曲线间的相关转化。
关键词：正交变换；仿射变换；射影变换。
Transformation In Several Problems Of Applied
Abstract: In this paper, Orthogonal transformation、Affine transformation、Projective transformation. and the define of their especially examples and related property are mainly induced. Their application in Mathematics problems and in Life actual are discussed, making use of affine transformation may carry out Quadric curve converts mutually.
Key words: Orthogonal transformation；Affine transformation；Projective transformation.