Question Number 63128 by Tawa1 last updated on 29/Jun/19
$$\mathrm{Examine}\:\mathrm{the}\:\mathrm{following}\:\mathrm{function}\:\mathrm{for}\:\mathrm{extreme}\:\mathrm{value} \\ $$$$\:\:\:\:\mathrm{f}\left(\mathrm{x},\:\mathrm{y}\right)\:\:=\:\:\mathrm{x}^{\mathrm{4}} \:+\:\mathrm{y}^{\mathrm{4}} \:−\:\mathrm{2x}^{\mathrm{3}} \:+\:\mathrm{4xy}\:−\:\mathrm{2y}^{\mathrm{2}} \\ $$
Commented by Hope last updated on 29/Jun/19
Commented by Hope last updated on 29/Jun/19
Commented by Hope last updated on 29/Jun/19
Commented by Hope last updated on 29/Jun/19
Commented by Hope last updated on 29/Jun/19
Commented by mathmax by abdo last updated on 29/Jun/19
$${thanks}\:{sir}\:{hope}\:{for}\:{charing}\:\:{this}\:{subject}\:{about}\:{differential}\:{calculus}. \\ $$
Commented by Hope last updated on 29/Jun/19
$${most}\:{welcome}\:{sir} \\ $$