已知函数f(x)=|x-a|,g(x)=x^2+2ax+1(a为正常数),且函数f(x)与g(x)的图象在y轴上的截距相等.(1)求a的值(2)求函数f(x)+g(x)的单调递增区间(3)若n为正整数,证明:10^f(n)(4/5)^g(n)<4已知函数f(x)=a^x+(x-2)/(x+1) (a>1
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![已知函数f(x)=|x-a|,g(x)=x^2+2ax+1(a为正常数),且函数f(x)与g(x)的图象在y轴上的截距相等.(1)求a的值(2)求函数f(x)+g(x)的单调递增区间(3)若n为正整数,证明:10^f(n)(4/5)^g(n)<4已知函数f(x)=a^x+(x-2)/(x+1) (a>1](/uploads/image/z/4491423-63-3.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3D%7Cx-a%7C%2Cg%28x%29%3Dx%5E2%2B2ax%2B1%28a%E4%B8%BA%E6%AD%A3%E5%B8%B8%E6%95%B0%29%2C%E4%B8%94%E5%87%BD%E6%95%B0f%28x%29%E4%B8%8Eg%28x%29%E7%9A%84%E5%9B%BE%E8%B1%A1%E5%9C%A8y%E8%BD%B4%E4%B8%8A%E7%9A%84%E6%88%AA%E8%B7%9D%E7%9B%B8%E7%AD%89.%281%29%E6%B1%82a%E7%9A%84%E5%80%BC%282%29%E6%B1%82%E5%87%BD%E6%95%B0f%28x%29%2Bg%28x%29%E7%9A%84%E5%8D%95%E8%B0%83%E9%80%92%E5%A2%9E%E5%8C%BA%E9%97%B4%283%29%E8%8B%A5n%E4%B8%BA%E6%AD%A3%E6%95%B4%E6%95%B0%2C%E8%AF%81%E6%98%8E%3A10%5Ef%28n%29%284%2F5%29%5Eg%28n%29%EF%BC%9C4%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Da%5Ex%2B%28x-2%29%2F%28x%2B1%29+%28a%EF%BC%9E1)
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