作业帮求I=lim[1/√(4n^2-1)+1/√(4n^2-2^2)+...+1/√(4n^2-n^2)]
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求I=lim[1/√(4n^2-1)+1/√(4n^2-2^2)+...+1/√(4n^2-n^2)]
求I=lim[1/√(4n^2-1)+1/√(4n^2-2^2)+...+1/√(4n^2-n^2)]
求I=lim[1/√(4n^2-1)+1/√(4n^2-2^2)+...+1/√(4n^2-n^2)]
原式=lim1/n[1/√(4-(1/n)^2)+1/√(4n^2-(2/n)^2)+...+1/√(4n^2-(n/n)^2)]
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求I=lim[1/√(4n^2-1)+1/√(4n^2-2^2)+...+1/√(4n^2-n^2)]
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