The curve C C\,C has equation y=x9+x2\displaystyle y = \frac{x}{9 + x^2}y=9+x2x. Use calculus to find the coordinates of the turning points of CCC.
Given that y=(1+e2x)32\displaystyle y = (1 + e^{2x})^{\frac{3}{2}}y=(1+e2x)23, find the value of dydx\displaystyle \frac{dy}{dx}dxdy at x=12ln3\displaystyle x = \frac{1}{2} \ln 3x=21ln3.
Practise Edexcel A Level Old Maths Differentiation with exam-style questions for A Level Old Maths. 14 questions, matched to the Edexcel A Level Old Maths (9371) specification and written in Unit exams C1, C2, C3 and C4 plus two applied units (e.g. S1 and M1) 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.