# Past Papers’ Solutions | Edexcel | AS & A level | Mathematics | Core Mathematics 1 (C1-6663/01) | Year 2011 | January | Q#11

Hits: 24 Question The curve C has equation , x>0 a. Find b. Show that the point P(4,−8) lies on C. c. Find an equation of the normal to C at the point P, giving your answer in the form ax + by + c = 0 , where a, b and c are integers. […]