Turn on thread page Beta

About to attempt a 12mark question, is this right? watch

    • Thread Starter

    The sketch shows the finite region bounded by
    the curve and the x-axis,

    This region is rotated 2π radians about the x-axis,
    Find the exact value of volume of the generated.
    i got

    π∫(xsin^½x)² dx
    π∫(x²sinx) dx

    now im gonna use integration by parts on that twice if neccessary and sub in the limits, is that the right way and btw i may sound like a noob, but is the algebra correct above when expanded brackets.

    Yeah looks all good to me, and yeah it looks like integration by parts, and yeah you'll have to do it twice lol.
Turn on thread page Beta
Updated: June 22, 2005
The home of Results and Clearing


people online now


students helped last year

University open days

  1. Sheffield Hallam University
    City Campus Undergraduate
    Tue, 21 Aug '18
  2. Bournemouth University
    Clearing Open Day Undergraduate
    Wed, 22 Aug '18
  3. University of Buckingham
    Postgraduate Open Evening Postgraduate
    Thu, 23 Aug '18
A-level students - how do you feel about your results?
Useful resources

Make your revision easier


Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here


How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.