Prove, from first principles, that the derivative of kx3 kx^3\,kx3 is 3kx23kx^23kx2, where k k\,k is a constant.
[5]
Markscheme
12.2 Differentiation from first principles Questions
5 exam-style questions on Edexcel A Level Maths 12.2 Differentiation from first principles. Each one has a worked solution and a mark scheme showing where the marks go.