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Re:我的c 程序:简单In Reply To:Re:我的c 程序:简单 Posted by:caizhicong0503 at 2007-02-11 15:30:54 1) 1/a = (1/b + 1/c)/(1 - 1/bc) -> 1/a = (b + c)/(bc - 1) -> (b - a)c = ab + 1 -> c = (ab + 1)/(b -a) -> b > a (!!!!) 2) b + c = b + (ab + 1)/(b -a) -> b + c = b + a + (a * a + 1)/(b -a) 令 :t = b - a 则有:f(t) = t + 2a +(a * a + 1)/t 此时用数学的方法把这到题简化到了t关于a的函数 求一下这个函数的定义域,b + c又是什么? 当然是这个函数的值域!! Followed by:
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