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real analysis - Prove by induction that $(1+x)^n \geq 1+nx ...
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日期：2025-12-14
19 Apr 2014 ... firstly, we can know it is true for n=1 and n=2,suppose when n=k, it is also true. it
means that >=1+kx ... Finally,(1+kx)(1+x)=1+kx+x+ >=1+(k+1)x....看更多
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