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3個互不相等有理數1 a a+b或0 b a/b設1,a,a+b中的a=0,則0,b,a/b三個數都為0不合題意舍去所以a+b=0 a=-b由:1,a,a+b得這三個數為1,a,0囙此b與a/b中有一個是1設a/b=1則a=b與上面的a=-b不符,因…
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