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limn1m+2m+3m+....+nmnm+1=____

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a
1m+1
b
1m+2
c
1m
d
1m+3

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detailed solution

Correct option is A

limn→∞1m+2m+3m+…+nmnm+1=limn→∞1n1mnm+2mnm+….+nmnm=limn→∞⁡1n∑r=1n rnm=∫01 xmdx=xm+1m+101=1m+1−0m+1=1m+1


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