CAIE P2 2013 June — Question 3

Exam BoardCAIE
ModuleP2 (Pure Mathematics 2)
Year2013
SessionJune
TopicAddition & Double Angle Formulae
3
  1. Show that \(12 \sin ^ { 2 } x \cos ^ { 2 } x \equiv \frac { 3 } { 2 } ( 1 - \cos 4 x )\).
  2. Hence show that $$\int _ { \frac { 1 } { 4 } \pi } ^ { \frac { 1 } { 3 } \pi } 12 \sin ^ { 2 } x \cos ^ { 2 } x d x = \frac { \pi } { 8 } + \frac { 3 \sqrt { } 3 } { 16 }$$
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