f(x,y) = 3/x + 5xy +2/y
The 2nd derivative of f at this point is D^2f(x*,y*) = A 2 x 2 matrix
I know the top right and bottom right are 5, but I am missing the top and bottom left. I believe the bottom left is 5 too. Also, what are the 2 eigenvalues?© BrainMass Inc. brainmass.com October 10, 2019, 5:48 am ad1c9bdddf
df(x,y)/dx=-3/x^2+5y -> d^2f(x,y)/dx^2=6/x^3
df(x,y)/dx=-3/x^2+5y -> d^2f(x,y)/dxdy=5
df(x,y)/dy=5x-2/y^2 -> ...
Derivatives and matrices are examined.