1).Find the extremum of f(x,y) subject to the given

Last updated: 8/10/2022

1).Find the extremum of f(x,y) subject to the given constraint, and state whether it is a maximum or a minimum. f(x,y)=20-x² - y²; x+4y=17 There is a ____ value of ____ located at (x,y) = ___