Comment on Hey there gamers
mister_monster@monero.town 6 months agoThe sum of all natural numbers smaller than and including x is equal to
(X+1)(x/2)
The sum of all even numbers up to and including x is that minus (n/2)² so
[(X+1)(x/2)]-(x/2)²
That would mean the sum of all odd numbers under x is equal to
(x/2)²
or sum of all odd including x (if x is odd of course) is
[(x+1)/2]²
Since the sum of all even numbers up to x is the sum of all numbers minus the sum of all odd numbers.
[-(X/2)² +2x +1]/2 (another way of writing the sum of all evens under and including a number) looks suspiciously polynomial. I want to go further.
MonkderDritte@feddit.de 6 months ago
And what’s the big X here?
mister_monster@monero.town 6 months ago
Typo