Question Number 121400 by rs4089 last updated on 07/Nov/20
$${ind}\:{maximum}\:{value}\:{of}\:\sqrt{{x}^{\mathrm{4}} +{y}^{\mathrm{4}} } \\ $$
Answered by MJS_new last updated on 07/Nov/20
$$\mathrm{for}\:{x},\:{y}\:\in\mathbb{R}:\:\mathrm{0}\leqslant\sqrt{{x}^{\mathrm{4}} +{y}^{\mathrm{4}} }<+\infty \\ $$