Question Number 189101 by TUN last updated on 12/Mar/23
Commented by mr W last updated on 12/Mar/23
$${there}\:{exist}\:{at}\:{least}\:\mathrm{10}^{\mathrm{10000000000000000}} \\ $$$${such}\:{functions}.\:{which}\:{one}\:{whould} \\ $$$${you}\:{like}\:{to}\:{have}?\:{one}\:{of}\:{the}\:{most} \\ $$$${simple}\:{ones}\:{is}\:{f}\left({x}\right)={x}. \\ $$