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已知f(x)=ax+(a>1).(1)证明:函数f(x)在(﹣1,+∞)上为增函数;(2)用反证法证明:方程f(x)=0没有负数根.
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高二下学期数学《2017-2018学年河北省石家庄市高二(下)期末数学试卷(文科)》真题及答案
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