Question Number 135933 by Engr_Jidda last updated on 17/Mar/21
$${Locate}\:{the}\:{critical}\:{points}\:{of}\:{the}\:{following} \\ $$$${functions}\:{and}\:{state}\:{the}\:{nature}\:{of}\:{each}. \\ $$$$\left(\mathrm{1}\right)\:{f}\left({x},{y}\right)=\mathrm{3}{x}^{\mathrm{4}} −\mathrm{2}{x}^{\mathrm{2}} +\mathrm{2}{xy}−{x}+\mathrm{3}{y}^{\mathrm{2}} −\mathrm{6}{y}+\mathrm{15} \\ $$$$\left(\mathrm{2}\right)\:{f}\left({x},{y}\right)={x}^{\mathrm{2}} −\mathrm{4}{xy}+{y}^{\mathrm{2}} \\ $$
Answered by dhgt last updated on 04/May/21
Commented by dhgt last updated on 04/May/21
Commented by dhgt last updated on 04/May/21
