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#1
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àŢ¡¡ÓÅѧ and operation of function
¶éÒ $f(x)=\frac{a^x-a^{-x}}{2}$áÅÐ$g(x)=\frac{a^x+a^{-x}}{2}$¨§ËÒ¤èÒ
1)$f(x)\bullet g(y)$ 2)$f(x)\bullet g(y)+f(y)\bullet g(x)$ 3)$f(x+y)$
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#2
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¢é͹ÕéäÁèµéͧáÅéǹФÃѺ ã¤Ã¨Ðä»ÃÙéÇèÒãËé·Ó§èÒÂæÍÂèÒ§¹Õé á¤èá·¹¤èÒáÅéǵԴµÑÇá»ÃäÇéÂÒÇæâ¸è
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I think you're better than you think you are. |
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µÃǨÇèÒ binary operation à»ç¹ associative ËÃ×ÍäÁè â´Â´Ù¨Ò¡ operation table ÍÂèÒ§äà | rigor | ¾Õª¤³Ôµ | 1 | 14 Á¡ÃÒ¤Á 2006 00:32 |
¡Òà take function | meteor | »ÑËÒ¤³ÔµÈÒʵÃì·ÑèÇä» | 4 | 16 ¡Ã¡®Ò¤Á 2004 19:59 |
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