Did not know where else to post this....

Show that f(x) = x2 + 2x + 1 is O(x2 ).

O is Big-O Notation. I do not understand parts of it. Basically retrieving Positive Constant 'C' and 'k' (the Witnesses).

And to find >> |f(x)| <= C |g(x)| whenever x > k.

If anyone is able to understand and knows this, please show in steps how you came to the result.

Thanks A lot.