證右邊時,如果第一步就用柯西-史瓦茲不等式去根號,肯定證不出來。
所有跟帖:
• 是的。我寫了一下,不行。 -yma16- ♂ (0 bytes) () 03/15/2024 postreply 16:44:01
• 是的。我寫了一下,不行。 -yma16- ♂ (0 bytes) () 03/15/2024 postreply 16:44:01
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