已知a,b,c是均不等于O的有理数,讨论IaI/a+IbI/b+IcI/b+IabI/ab+IacI/ac+IbcI/bc+IabcI/abc的值
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![已知a,b,c是均不等于O的有理数,讨论IaI/a+IbI/b+IcI/b+IabI/ab+IacI/ac+IbcI/bc+IabcI/abc的值](/uploads/image/z/1990210-58-0.jpg?t=%E5%B7%B2%E7%9F%A5a%2Cb%2Cc%E6%98%AF%E5%9D%87%E4%B8%8D%E7%AD%89%E4%BA%8EO%E7%9A%84%E6%9C%89%E7%90%86%E6%95%B0%2C%E8%AE%A8%E8%AE%BAIaI%2Fa%2BIbI%2Fb%2BIcI%2Fb%2BIabI%2Fab%2BIacI%2Fac%2BIbcI%2Fbc%2BIabcI%2Fabc%E7%9A%84%E5%80%BC)
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已知a,b,c是均不等于O的有理数,讨论IaI/a+IbI/b+IcI/b+IabI/ab+IacI/ac+IbcI/bc+IabcI/abc的值
已知a,b,c是均不等于O的有理数,讨论IaI/a+IbI/b+IcI/b+IabI/ab+IacI/ac+IbcI/bc+IabcI/abc的值
已知a,b,c是均不等于O的有理数,讨论IaI/a+IbI/b+IcI/b+IabI/ab+IacI/ac+IbcI/bc+IabcI/abc的值
(1)a.b.c都>0.值为7
(2)abc都<0.值为-1
(3)abc中有两个>0一个<0.值为-1
(4)abc中有两个<0一个>0.值为-1