定义在R上的奇函数f(x),下列结论中不正确的是A. f(x)+f(-x)=0 B. f(x)-f(-x)=2f(x)C. f(x)·f(-x)小于等于0 D.f(x)/f(-x)=-1答案选D 理由。谢谢啦~
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![定义在R上的奇函数f(x),下列结论中不正确的是A. f(x)+f(-x)=0 B. f(x)-f(-x)=2f(x)C. f(x)·f(-x)小于等于0 D.f(x)/f(-x)=-1答案选D 理由。谢谢啦~](/uploads/image/z/14762286-54-6.jpg?t=%E5%AE%9A%E4%B9%89%E5%9C%A8R%E4%B8%8A%E7%9A%84%E5%A5%87%E5%87%BD%E6%95%B0f%28x%29%2C%E4%B8%8B%E5%88%97%E7%BB%93%E8%AE%BA%E4%B8%AD%E4%B8%8D%E6%AD%A3%E7%A1%AE%E7%9A%84%E6%98%AFA.+f%28x%29%2Bf%28-x%29%3D0+++++++++++++B.+f%28x%29%EF%BC%8Df%28-x%29%3D2f%28x%29C.+f%28x%29%C2%B7f%28-x%29%E5%B0%8F%E4%BA%8E%E7%AD%89%E4%BA%8E0+++++D.f%28x%29%2Ff%28-x%29%3D-1%E7%AD%94%E6%A1%88%E9%80%89D+++%E7%90%86%E7%94%B1%E3%80%82%E8%B0%A2%E8%B0%A2%E5%95%A6%7E)
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