How can I show that $n^2
Step 1
For n=1, the LHS=42=16 and RHS=4!=24. So LHS< RHS.
Step 2
Suppose the result be true for n=k i.e.,
$k^2
Step 3
For n=k+1
(k+1)2=k2+2k+1
What will be the next step?
How to find lim without lhopital rule? I know when I use lhopital I easy get $$ \lim_{h\rightarrow 0}...
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