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笔者在教学分式时,遇到较熟悉的两个命题,这两个命题似乎不大起眼,但它引发了一个推广.命题1已知ab=1,求证:a/(a+1)+b/(b+1)=1.证明保留左边第1个分式a/(a+1)的原形,把第2
I encountered two more familiar propositions in the teaching of fractional, these two propositions seem to be less prominent, but it triggered a promotion Proposition 1 known ab = 1, verify: a / (a + 1) + b / (b + 1) = 1. Proof of preserving the original form of the first fraction a / (a + 1)