Cho a,b,c>0. CMR: $\frac{ab}{c(c+a)}+\frac{bc}{a(a+b)}+\frac{ca}{b(b+c)}\geq \frac{a}{a+c}+\frac{b}{a+b}+\frac{c}{b+c}$
Cho a,b,c>0. CMR: $\frac{ab}{c(c+a)}+\frac{bc}{a(a+b)}+\frac{ca}{b(b+c)}\geq \frac{a}{a+c}+\frac{b}{a+b}+\
Started By luuvanthai, 03-11-2018 - 13:49
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