Find the local maximum and minimum values and the saddle points of f(x,y) = 2xy + x-y.© BrainMass Inc. brainmass.com March 4, 2021, 5:55 pm ad1c9bdddf
A function of two variables has a local maximum at (a,b)
<br>if f(x,y) =< f(a,b) when (x,y) is near (a,b)
<br>The number f(a,b) is called a local maximum value.
<br>If f(x,y) >= f(a,b) when (x,y) is near (a,b) then f(a,b) is a local minimum value. ...
Very detail answer with easy to understand steps.