V
vodka00
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
khó quá giúp mình nha :
cho M= 1+[TEX]\frac{1}{2}[/TEX]+[TEX]\frac{1}{3}[/TEX]+...+[TEX]\frac{1}{2^{100}-1}[/TEX]
CMR: 50<M<100
cho M= 1+[TEX]\frac{1}{2}[/TEX]+[TEX]\frac{1}{3}[/TEX]+...+[TEX]\frac{1}{2^{100}-1}[/TEX]
CMR: 50<M<100
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