The curve has equation y=x4+x2\displaystyle y = \frac{x}{4+x^2}y=4+x2x.
Find the coordinates of the stationary points of the curve and determine the nature of the stationary points.
57 exam-style questions on AQA A Level Maths 1.10.3 Applications of differentiation. Each one has a worked solution and a mark scheme showing where the marks go.