令y=-1, 可得f(x)是常數,解之,無實函數解
所有跟帖:
• 尚有另一可能 -亂彈- ♂ (520 bytes) () 10/15/2014 postreply 20:10:41
• 是啊,我忘了f(-1)+1/2可以是0,這時f(x)可以不是常數 -萬斤油- ♂ (0 bytes) () 10/15/2014 postreply 20:57:19
• 尚有另一可能 -亂彈- ♂ (520 bytes) () 10/15/2014 postreply 20:10:41
• 是啊,我忘了f(-1)+1/2可以是0,這時f(x)可以不是常數 -萬斤油- ♂ (0 bytes) () 10/15/2014 postreply 20:57:19
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