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用数学归纳法证明1-+-+…+-=++…+(n∈N*),则从“n=k到n=k+1...
用数学归纳法证明1-
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+
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-
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+…+
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-
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=
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+
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+…+
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(n∈N
*),则从“n=k到n=k+1”,左边所要添加的项是( )
A.
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B.
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-
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131024182933773875324/SYS201310241829337738753013_ST/10.png)
C.-
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D.
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-
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考点分析:
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