OCR H240/03 2023 June — Question 3

Exam BoardOCR
ModuleH240/03 (Pure Mathematics and Mechanics)
Year2023
SessionJune
TopicCurve Sketching
TypeSingle transformation application

3 The cubic polynomial \(\mathrm { f } ( x )\) is defined by \(\mathrm { f } ( x ) = x ^ { 3 } + p x + q\), where \(p\) and \(q\) are constants.
    1. Given that \(\mathrm { f } ^ { \prime } ( 2 ) = 13\), find the value of \(p\).
    2. Given also that ( \(x - 2\) ) is a factor of \(\mathrm { f } ( x )\), find the value of \(q\). The curve \(y = \mathrm { f } ( x )\) is translated by the vector \(\binom { 2 } { - 3 }\).
  1. Using the values from part (a), determine the equation of the curve after it has been translated. Give your answer in the form \(y = x ^ { 3 } + a x ^ { 2 } + b x + c\), where \(a , b\) and \(c\) are integers to be found.