Question: Find the maximum and minimum values of where (x, y) lies on the circle x 2 + y 2 + 2x + y = 1.

Find the maximum and minimum values of

f(x, y) = 4x + y + y

where (x, y) lies on the circle x2 + y2 + 2x + y = 1.

f(x, y) = 4x + y +y

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