Edexcel C3 2014 June — Question 1

Exam BoardEdexcel
ModuleC3 (Core Mathematics 3)
Year2014
SessionJune
TopicProduct & Quotient Rules

  1. The curve \(C\) has equation \(y = \mathrm { f } ( x )\) where
$$f ( x ) = \frac { 4 x + 1 } { x - 2 } , \quad x > 2$$
  1. Show that $$f ^ { \prime } ( x ) = \frac { - 9 } { ( x - 2 ) ^ { 2 } }$$ Given that \(P\) is a point on \(C\) such that \(\mathrm { f } ^ { \prime } ( x ) = - 1\),
  2. find the coordinates of \(P\).