设函数f(x)=ln(1+x),g(x)=x
(1)若x>0,求证:
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(2)是否存在实数m,使函数h(x)=
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-f(x
2)-m恰有四个不同的零点?若存在求出的m范围;若不存在,说明理由.
考点分析:
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