Question Number 185673 by Mingma last updated on 25/Jan/23
Answered by Frix last updated on 25/Jan/23
$$\mathrm{Due}\:\mathrm{to}\:\mathrm{symmetry}\:{x}={y}={z}=\frac{\mathrm{1}}{\mathrm{3}}\:\Rightarrow\:\mathrm{maximum} \\ $$$$\mathrm{value}\:\mathrm{is}\:\frac{\mathrm{1}}{\mathrm{27}} \\ $$