# Math Help - Show that summation >= sqrt(n)

1. ## Show that summation >= sqrt(n)

Show that the summation from k=1 to n of 1/sqrt(k) >= sqrt(n)

2. Originally Posted by WartonMorton
Show that the summation from k=1 to n of 1/sqrt(k) >= sqrt(n)
Hint - Use induction. It is not difficult.

3. Originally Posted by aman_cc
Hint - Use induction. It is not difficult.
Otherwise also

$
\sum_1^n 1/\sqrt i \geq \sum_1^n 1/\sqrt n
$

and the result follows directly