已知函数f(x)=ax^2+bx+1(a,b为实数),x€R,F(x)={f(x) (x>0).-f(x) (x0且f(x)为偶函数,判断F(m)+F(n)能否大于零?
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![已知函数f(x)=ax^2+bx+1(a,b为实数),x€R,F(x)={f(x) (x>0).-f(x) (x0且f(x)为偶函数,判断F(m)+F(n)能否大于零?](/uploads/image/z/9306601-25-1.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dax%5E2%2Bbx%2B1%28a%2Cb%E4%B8%BA%E5%AE%9E%E6%95%B0%29%2Cx%26%238364%3BR%2CF%28x%29%3D%7Bf%28x%29+%28x%3E0%29.-f%28x%29+%28x0%E4%B8%94f%28x%29%E4%B8%BA%E5%81%B6%E5%87%BD%E6%95%B0%2C%E5%88%A4%E6%96%ADF%28m%29%2BF%28n%29%E8%83%BD%E5%90%A6%E5%A4%A7%E4%BA%8E%E9%9B%B6%3F)
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