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moo5003
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Homework Equations
Prove the following for n > 1, n is a natural number.
Sum (from i=1 to n) of:
1/sqrt(i)
is > then
sqrt(n)
The Attempt at a Solution
To be honest I have spent 2+ hours on this with little results. I have tried induction on n, I tried showing one increases more every step then the other ie:
A_n = Sum (from i=1 to n) of:
1/sqrt(i)
B_n = sqrt(n)
That A_(n+1) / A_n > B_(n+1) / B_n
I have tried squaring both sides and simplifying the expression. I just cannot seem to make any progress on this. Any help would be appreciated.
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