已知函数f(x)=x²+ax+b(a、b∈R),g(x)=2x²-4x-16(1)若f(x)的绝对值小于等于g(x)的绝对值对于x属于R恒成立,求a、b;(2)在(1)的条件下,若对一切x大于2,均有f(x)大于等于(m+2)x-m-15成立,求实数m的取
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![已知函数f(x)=x²+ax+b(a、b∈R),g(x)=2x²-4x-16(1)若f(x)的绝对值小于等于g(x)的绝对值对于x属于R恒成立,求a、b;(2)在(1)的条件下,若对一切x大于2,均有f(x)大于等于(m+2)x-m-15成立,求实数m的取](/uploads/image/z/1782005-5-5.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dx%26%23178%3B%2Bax%2Bb%28a%E3%80%81b%E2%88%88R%29%2Cg%28x%29%3D2x%26%23178%3B-4x-16%EF%BC%881%EF%BC%89%E8%8B%A5f%28x%29%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%B0%8F%E4%BA%8E%E7%AD%89%E4%BA%8Eg%28x%29%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%E5%AF%B9%E4%BA%8Ex%E5%B1%9E%E4%BA%8ER%E6%81%92%E6%88%90%E7%AB%8B%2C%E6%B1%82a%E3%80%81b%3B%282%29%E5%9C%A8%281%29%E7%9A%84%E6%9D%A1%E4%BB%B6%E4%B8%8B%2C%E8%8B%A5%E5%AF%B9%E4%B8%80%E5%88%87x%E5%A4%A7%E4%BA%8E2%2C%E5%9D%87%E6%9C%89f%EF%BC%88x%29%E5%A4%A7%E4%BA%8E%E7%AD%89%E4%BA%8E%EF%BC%88m%2B2%29x-m-15%E6%88%90%E7%AB%8B%2C%E6%B1%82%E5%AE%9E%E6%95%B0m%E7%9A%84%E5%8F%96)
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