Question Number 129129 by Adel last updated on 13/Jan/21
Commented by MJS_new last updated on 13/Jan/21
$$\mathrm{I}\:\mathrm{think}\:\mathrm{the}\:\mathrm{answer}\:\mathrm{is}\:\frac{\mathrm{1}}{\mathrm{e}}\:\mathrm{but}\:\mathrm{I}\:\mathrm{cannot}\:\mathrm{yet}\:\mathrm{show}\:\mathrm{it} \\ $$
Commented by Adel last updated on 13/Jan/21
$$\mathrm{How}\:\mathrm{is}\:\mathrm{ansewer}\:\mathrm{then} \\ $$
Commented by mr W last updated on 13/Jan/21
$$\frac{\mathrm{1}}{{e}}\:{is}\:{correct}. \\ $$$${see}\:{Q}\mathrm{129199} \\ $$
Answered by mnjuly1970 last updated on 13/Jan/21
$${ans}:=\frac{\mathrm{1}}{{e}} \\ $$