Question Number 47860 by Cesar Larez last updated on 15/Nov/18
$$\mathrm{Anyone}\:\mathrm{know}\:\mathrm{how}\:\mathrm{it}\:\mathrm{came}\:\mathrm{to}\:\mathrm{the}\: \\ $$$$\mathrm{working}\:\mathrm{equation}? \\ $$
Commented by Necxx last updated on 16/Nov/18
$${what}\:{working}\:{equation}? \\ $$