Question

Locate the position of any stationary points of the function f(x, y)=8 y^{3}+x^{2}-23 y Enter your answer in the form (x, y). Enter the point with the highest y coordinate first, then the lowest. Type N for both points if there are no stationary points. The position of the stationary point with the highest y coordinate is given by The position of the stationary point with the lowest y coordinate is given by

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