A function f f\,f is defined by f(x)=2x1+x2,x∈R\displaystyle f(x) = \frac{2x}{1+x^2}, x \in \mathbb{R}f(x)=1+x22x,x∈R.
Find the coordinates of the stationary points of the graph of y=f(x)y = f(x)y=f(x) and determine the nature of these stationary points.
Practise Edexcel A Level Maths 9.9 Using Second Derivatives with exam-style questions for A Level Maths. 57 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.