1、已知定义在R上的奇函数f(x)满足f(x+2)=-f(x),则f(6)=?2、已知集合A={-1,a^2+1,a^2-3},B={a-3,a-1,a+1},若A交B={-2},求实数a的范围.(问题是我解到的是确定的值,而不是范围)3、函数f(x)=x^3+4x.判断f(x)在R上
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![1、已知定义在R上的奇函数f(x)满足f(x+2)=-f(x),则f(6)=?2、已知集合A={-1,a^2+1,a^2-3},B={a-3,a-1,a+1},若A交B={-2},求实数a的范围.(问题是我解到的是确定的值,而不是范围)3、函数f(x)=x^3+4x.判断f(x)在R上](/uploads/image/z/8698199-23-9.jpg?t=1%E3%80%81%E5%B7%B2%E7%9F%A5%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%E6%BB%A1%E8%B6%B3f%28x%2B2%29%3D-f%28x%29%2C%E5%88%99f%286%29%3D%3F2%E3%80%81%E5%B7%B2%E7%9F%A5%E9%9B%86%E5%90%88A%3D%7B-1%2Ca%5E2%2B1%2Ca%5E2-3%7D%2CB%3D%7Ba-3%2Ca-1%2Ca%2B1%7D%2C%E8%8B%A5A%E4%BA%A4B%3D%7B-2%7D%2C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E8%8C%83%E5%9B%B4.%EF%BC%88%E9%97%AE%E9%A2%98%E6%98%AF%E6%88%91%E8%A7%A3%E5%88%B0%E7%9A%84%E6%98%AF%E7%A1%AE%E5%AE%9A%E7%9A%84%E5%80%BC%2C%E8%80%8C%E4%B8%8D%E6%98%AF%E8%8C%83%E5%9B%B4%EF%BC%893%E3%80%81%E5%87%BD%E6%95%B0f%28x%29%3Dx%5E3%2B4x.%E5%88%A4%E6%96%ADf%28x%29%E5%9C%A8R%E4%B8%8A)
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