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引用 do you like beef noodles?i like it and i can make it .first ,we should check your ingredient .we need noodles,beef,tomatoes,salt,a teaspoon and a bowl .next ,boil the noodles .wash the tomatoes and cut it up .cut up the beef .after that ,take them

(1)证明见试题解析;(2) . 试题分析:(1)这是抽象函数问题,要证明它是奇函数,当然要根据奇函数的定义,证明 或 ,由此在已知式 里设 ,从而有 ,因此我们还要先求出 ,这个只要设 或者有一个为0即可得 ,故可证得

引用 do you like beef noodles?i like it and i can make it .first ,we should check your ingredient .we need noodles,beef,tomatoes,salt,a teaspoon and a bowl .next ,boil the noodles .wash the tomatoes and cut it up .cut up the beef .after that ,take them

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