y=lnx−3exy = \ln x - 3e^xy=lnx−3ex
Find dydx\displaystyle \frac{dy}{dx}dxdy
Find d2ydx2\displaystyle \frac{d^2y}{dx^2}dx2d2y
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.