AQA C3 2015 June — Question 5 9 marks

Exam BoardAQA
ModuleC3 (Core Mathematics 3)
Year2015
SessionJune
Marks9
TopicProduct & Quotient Rules

5
  1. By writing \(\tan x\) as \(\frac { \sin x } { \cos x }\), use the quotient rule to show that \(\frac { \mathrm { d } } { \mathrm { d } x } ( \tan x ) = \sec ^ { 2 } x\).
    [0pt] [2 marks]
  2. Use integration by parts to find \(\int x \sec ^ { 2 } x \mathrm {~d} x\).
    [0pt] [4 marks]
  3. The region bounded by the curve \(y = ( 5 \sqrt { x } ) \sec x\), the \(x\)-axis from 0 to 1 and the line \(x = 1\) is rotated through \(2 \pi\) radians about the \(x\)-axis to form a solid. Find the value of the volume of the solid generated, giving your answer to two significant figures.
    [0pt] [3 marks]