设a>b>c.(a-c)*(1/a-b+1/b-c)大于等于k.则k的最大值为、?
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![设a>b>c.(a-c)*(1/a-b+1/b-c)大于等于k.则k的最大值为、?](/uploads/image/z/3701720-56-0.jpg?t=%E8%AE%BEa%3Eb%3Ec.%28a-c%29%2A%281%2Fa-b%2B1%2Fb-c%29%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8Ek.%E5%88%99k%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%E4%B8%BA%E3%80%81%3F)
设a>b>c.(a-c)*(1/a-b+1/b-c)大于等于k.则k的最大值为、?
设a>b>c.(a-c)*(1/a-b+1/b-c)大于等于k.则k的最大值为、?
设a>b>c.(a-c)*(1/a-b+1/b-c)大于等于k.则k的最大值为、?
(a-c)*(1/a-b+1/b-c)>=k
(a-b+b-c)*(1/a-b+1/b-c)
=[1+(b-c)/(a-b)+1+(a-b)/(b-c)]
>=4
则k的最大值为4