(i)[6]
Find the equation of the tangent to the curve at the point $(2, -1)$, and give your answer in the form $ax + by + c = 0$, where $a$, $b$ and $c$ are integers.
(ii)[4]
Show that the curve has no stationary points.
Mathematics 9709 · AS & A Level · Differentiation
Differentiation — practice question
The equation for a curve is $2x^2 + 3xy + y^2 = 3$.