Edexcel C34 2018 October — Question 5

Exam BoardEdexcel
ModuleC34 (Core Mathematics 3 & 4)
Year2018
SessionOctober
TopicIntegration with Partial Fractions

5. $$f ( x ) = \frac { 4 x ^ { 2 } + 5 x + 3 } { ( x + 2 ) ( 1 - x ) ^ { 2 } } \equiv \frac { A } { ( x + 2 ) } + \frac { B } { ( 1 - x ) } + \frac { C } { ( 1 - x ) ^ { 2 } }$$
  1. Find the values of the constants \(A\), \(B\) and \(C\).
    1. Hence find \(\int \mathrm { f } ( x ) \mathrm { d } x\).
    2. Find the exact value of \(\int _ { 0 } ^ { \frac { 1 } { 2 } } \mathrm { f } ( x ) \mathrm { d } x\), writing your answer in the form \(p + \ln q\), where \(p\) and \(q\) are constants.
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