Edexcel AEA 2002 Specimen — Question 2 9 marks

Exam BoardEdexcel
ModuleAEA (Advanced Extension Award)
Year2002
SessionSpecimen
Marks9
PaperDownload PDF ↗
TopicIntegration by Parts
TypeIntegration of e^(ax)·trig(bx)
DifficultyChallenging +1.2 This is a standard integration by parts problem requiring two applications to create a system of equations relating S and C. While it requires careful algebraic manipulation and evaluation at limits, the technique is well-established and taught explicitly in Further Maths. The AEA context adds slight difficulty, but this is a textbook example of the e^(ax)·trig(bx) type rather than requiring novel insight.
Spec1.08i Integration by parts

2.Given that \(S = \int _ { 0 } ^ { \frac { \pi } { 2 } } \mathrm { e } ^ { 2 x } \sin x \mathrm {~d} x\) and \(C = \int _ { 0 } ^ { \frac { \pi } { 2 } } \mathrm { e } ^ { 2 x } \cos x \mathrm {~d} x\) ,
  1. show that \(S = 1 + 2 C\) ,
  2. find the exact value of \(S\) .

2.Given that $S = \int _ { 0 } ^ { \frac { \pi } { 2 } } \mathrm { e } ^ { 2 x } \sin x \mathrm {~d} x$ and $C = \int _ { 0 } ^ { \frac { \pi } { 2 } } \mathrm { e } ^ { 2 x } \cos x \mathrm {~d} x$ ,
\begin{enumerate}[label=(\alph*)]
\item show that $S = 1 + 2 C$ ,
\item find the exact value of $S$ .
\end{enumerate}

\hfill \mbox{\textit{Edexcel AEA 2002 Q2 [9]}}