AQA AS Paper 1 2020 June — Question 6

Exam BoardAQA
ModuleAS Paper 1 (AS Paper 1)
Year2020
SessionJune
TopicFactor & Remainder Theorem
TypeSolve p(exponential) = 0

6
  1. It is given that $$f ( x ) = x ^ { 3 } - x ^ { 2 } + x - 6$$ Use the factor theorem to show that \(( x - 2 )\) is a factor of \(\mathrm { f } ( x )\).
    6
  2. Find the quadratic factor of \(\mathrm { f } ( x )\).
    6
  3. Hence, show that there is only one real solution to \(\mathrm { f } ( x ) = 0\)
    6
  4. Find the exact value of \(x\) that solves $$\mathrm { e } ^ { 3 x } - \mathrm { e } ^ { 2 x } + \mathrm { e } ^ { x } - 6 = 0$$ \(7 \quad\) Curve \(C\) has equation \(y = x ^ { 2 }\)
    \(C\) is translated by vector \(\left[ \begin{array} { l } 3
    0 \end{array} \right]\) to give curve \(C _ { 1 }\)
    Line \(L\) has equation \(y = x\)
    \(L\) is stretched by scale factor 2 parallel to the \(x\)-axis to give line \(L _ { 1 }\)
    Find the exact distance between the two intersection points of \(C _ { 1 }\) and \(L _ { 1 }\)