It is given that
f(x)=4x3+3xf(x) = 4x^3 + 3xf(x)=4x3+3x
Use differentiation from first principles to prove that
f′(x)=12x2+3f'(x) = 12x^2 + 3f′(x)=12x2+3
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Markscheme
1.7.7 Differentiation from first principles for powers of x Questions
8 exam-style questions on OCR A Level Maths 1.7.7 Differentiation from first principles for powers of x. Each one has a worked solution and a mark scheme showing where the marks go.