Question: In Exercises 31 through 36, find all points (both coordinates) on the given curve where the tangent line is (a) Horizontal (b) Vertical. x 2

In Exercises 31 through 36, find all points (both coordinates) on the given curve where the tangent line is 

(a) Horizontal 

(b) Vertical.

x2 + xy + y2 = 3

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