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人教版高中数学课本第二册(上)《复习参考题六》A组第8题是:已知a>b>c,求证:1/(a-b)+1/(b-c)+1/(c-a)>0。本文给出它的多证及改编,希望能够给同学们的学习及数学素养的提高带去帮助。
PEP High School Mathematics Text Book 2 (on) “Review Questions 6” Question 8 in Group A: Knowing a>b>c, Proof: 1/(ab)+1/(bc)+1/( Ca)>0. This article gives its multi-evidence and adaptation, hoping to help the students’ learning and the improvement of their math literacy.