determine the stationary points of the function f(x,y) = (x^2 + 1/2(xy) + y^2)e^(x+y)
The Attempt at a Solution
first i got
i then let them both = 0
and i get
i've tried different to solve them simultaniously and then sub back in. I've tried to factorise them which i think i should do but cant seem to get it could anyone give me some pointers please?