已知函数f(x)=x2+ax+a/x,x∈[1,正无穷)且a已知函数f(x)=x2+ax+a除以x,x属于[1,正无穷),且af(5-2m),试确定m的取值范围。(3)若函数g(x)=x?f(x)对任意x属于[2,5]时,g(x)+2x+3/2>0恒成立,求a的取值范围。
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![已知函数f(x)=x2+ax+a/x,x∈[1,正无穷)且a已知函数f(x)=x2+ax+a除以x,x属于[1,正无穷),且af(5-2m),试确定m的取值范围。(3)若函数g(x)=x?f(x)对任意x属于[2,5]时,g(x)+2x+3/2>0恒成立,求a的取值范围。](/uploads/image/z/8919414-54-4.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dx2%2Bax%2Ba%2Fx%2Cx%E2%88%88%5B1%2C%E6%AD%A3%E6%97%A0%E7%A9%B7%29%E4%B8%94a%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dx2%2Bax%2Ba%E9%99%A4%E4%BB%A5x%EF%BC%8Cx%E5%B1%9E%E4%BA%8E%5B1%EF%BC%8C%E6%AD%A3%E6%97%A0%E7%A9%B7%EF%BC%89%EF%BC%8C%E4%B8%94af%285-2m%29%EF%BC%8C%E8%AF%95%E7%A1%AE%E5%AE%9Am%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E3%80%82%283%29%E8%8B%A5%E5%87%BD%E6%95%B0g%28x%29%3Dx%3Ff%28x%29%E5%AF%B9%E4%BB%BB%E6%84%8Fx%E5%B1%9E%E4%BA%8E%5B2%EF%BC%8C5%5D%E6%97%B6%EF%BC%8Cg%28x%29%2B2x%2B3%2F2%3E0%E6%81%92%E6%88%90%E7%AB%8B%EF%BC%8C%E6%B1%82a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%E3%80%82)
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