一道解析几何题中的“动中的不动”

一道解析几何题中的“动中的不动”

WANG Chang-Hui

SHU XUE JIAO XUE ›› 2016, Vol. 1 ›› Issue (8) : 10-13.

SHU XUE JIAO XUE ›› 2016, Vol. 1 ›› Issue (8) : 10-13.

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