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我们知道,对于y=k/x(k≠0)的图象上的任一点P(xo,yo),有xo·yo=k(※),在解反比例函数问题时,运用此结论可获得简解.
We know that for any point P(xo, yo) on the image of y=k/x(k≠0), there is xo·yo=k(※), which can be used to solve the inverse inverse function problem. Simple explanation.