The point A A\,A lies on the curve with equation y=xx+7y = x\sqrt{x+7}y=xx+7 with xxx-coordinate 2.
Find an equation of the normal to the curve at the point AAA.
47 exam-style questions on OCR (MEI) A Level Maths 1.9.16 Implicit differentiation (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.