Hi,

Could someone please explain how to do this:

Show by Induction that:

n^2 - 2n + 5 > 0 for all n>=1

I have so far:

Show true for n = 1

Assume true for n = k

Show true for n = k+1 (using assumption)

So:

k^2 + 2k + 5 -2k - 1 >0

|---- >0 ---|

??

Thanks.