Let z = f(x,y) be a function with continuous second partial derivatives throughout R2. Assume that fx(1,1) = fy(1,1)=0, fxx(1,1)= −fyy(1,1) = 1 and fxy(1,1)=0. 1. f has a critical point at (1,1). 2. f has a local minimum at (1,1). which is correct, incorrect or both

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