请教高中必修一数学的几道问题1.若函数F(X)的定义域为R,且满足F(X)-2F(X)=3X,则F(X)必为(答案奇函数)2.定义域在R上的偶函数F(X),对任意X1 X2属于[0,正无穷),X1≠X2 则有(X1-X2)(F(X1)-F(X2))<0 ,则(答
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![请教高中必修一数学的几道问题1.若函数F(X)的定义域为R,且满足F(X)-2F(X)=3X,则F(X)必为(答案奇函数)2.定义域在R上的偶函数F(X),对任意X1 X2属于[0,正无穷),X1≠X2 则有(X1-X2)(F(X1)-F(X2))<0 ,则(答](/uploads/image/z/9254308-4-8.jpg?t=%E8%AF%B7%E6%95%99%E9%AB%98%E4%B8%AD%E5%BF%85%E4%BF%AE%E4%B8%80%E6%95%B0%E5%AD%A6%E7%9A%84%E5%87%A0%E9%81%93%E9%97%AE%E9%A2%981.%E8%8B%A5%E5%87%BD%E6%95%B0F%28X%29%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E4%B8%BAR%2C%E4%B8%94%E6%BB%A1%E8%B6%B3F%28X%29-2F%28X%29%3D3X%2C%E5%88%99F%28X%29%E5%BF%85%E4%B8%BA%28%E7%AD%94%E6%A1%88%E5%A5%87%E5%87%BD%E6%95%B0%292.%E5%AE%9A%E4%B9%89%E5%9F%9F%E5%9C%A8R%E4%B8%8A%E7%9A%84%E5%81%B6%E5%87%BD%E6%95%B0F%28X%29%2C%E5%AF%B9%E4%BB%BB%E6%84%8FX1+X2%E5%B1%9E%E4%BA%8E%5B0%2C%E6%AD%A3%E6%97%A0%E7%A9%B7%EF%BC%89%2CX1%E2%89%A0X2+%E5%88%99%E6%9C%89%EF%BC%88X1-X2%29%28F%28X1%29-F%28X2%29%29%EF%BC%9C0+%2C%E5%88%99%EF%BC%88%E7%AD%94)
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