请用放缩法证明:1+1/根号2+1/根号3+------+1/根号n<2根号n
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![请用放缩法证明:1+1/根号2+1/根号3+------+1/根号n<2根号n](/uploads/image/z/2624371-43-1.jpg?t=%E8%AF%B7%E7%94%A8%E6%94%BE%E7%BC%A9%E6%B3%95%E8%AF%81%E6%98%8E%EF%BC%9A1%2B1%2F%E6%A0%B9%E5%8F%B72%2B1%2F%E6%A0%B9%E5%8F%B73%2B------%2B1%2F%E6%A0%B9%E5%8F%B7n%EF%BC%9C2%E6%A0%B9%E5%8F%B7n)
请用放缩法证明:1+1/根号2+1/根号3+------+1/根号n<2根号n
请用放缩法证明:1+1/根号2+1/根号3+------+1/根号n<2根号n
请用放缩法证明:1+1/根号2+1/根号3+------+1/根号n<2根号n
证明:原式=1+2/(√2+√2)+2/(√3+√3)+2/(√4+√4)+...2/(√n+√n)
请用放缩法证明:1+1/根号2+1/根号3+------+1/根号n<2根号n
用分析法证明 1比(根号3+根号2)大于根号5-根号2
证明:x2+3/根号x2+1≥2根号2
证明:根号(x2+2x+4)-根号(x2-x+1)
证明:1/根号2+根号3>根号5-2改一下打错了分析法证明:1/(根号2+根号3)>根号5-2
证明2* (根号下N+1 -1)
证明:2((根号n+1)-1)
用放缩法证明2{根号(n+1)-1}
怎样证明根号2+1不是有理数
化简:|1-根号2|+|根号2-根号3|+|根号3-根号4|+.+|根号2011-根号2012|
化简:|1-根号2|+|根号2-根号3|+|根号3-根号4|+.+|根号99-根号100|
计算:/1-根号2/+/根号3-根号2/+/根号3-根号4/./根号2009-根号2010/
|1-根号2|+|根号2-根号3|+|根号3-根号4|+...+|根号99-根号100|
用数学归纳法证明:1+1/根号2+1/根号3+.+1/根号
证明1+1/根号2^3+1/根号3^3+.+1/根号n^3
证明不等式:1+1/根号2+1/根号3+...+1/根号N
用数学归纳法证明:1+1/根号2+1/根号3+.+1/根号n
高中不等式证明(放缩法)1+1/根号2+1/根号3+.+1/根号n