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I have posted a link there to this thread so the OP can view my work.Find the (x; y) coordinates of the stationary point of: z(x,y) = 2x^2 - 2xy + y^2 + 2x + 5 and find the natu?

Find the (x; y) coordinates of the stationary point of:

z(x,y) = 2x^2 - 2xy + y^2 + 2x + 5

and find the nature of the stationary point.