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[不等式] 三个变量的不等式,求范围

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facebooker posted 2023-5-21 23:14 |Read mode
正数$a,b,c$满足 $\dfrac{c}{a+b}-\dfrac{a}{b+c}=\dfrac{b}{a+c},$则$\dfrac{c}{a+b}$的取值范围是___

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kuing posted 2023-5-22 00:52
与《撸题集》P.663~664 题目 5.1.63 等价。

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original poster facebooker posted 2023-5-22 03:22
kuing 发表于 2023-5-22 00:52
与《撸题集》P.663~664 题目 5.1.63 等价。
多谢 这就去找撸题集学习!

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