Turn on thread page Beta
 You are Here: Home >< Maths

# Help! watch

1. How do I integrate x^2/4-x?

Thank you!
2. (Original post by Hlrk)
How do I integrate x^2/4-x?

Thank you!
Carry out some sort of division and integrate term by term.
3. How would I go about that?
4. (Original post by Hlrk)
How would I go about that?
Using your preferred method of polynomial division.
5. If you can't remember how to divide polynomials you could note that:

6. (Original post by Hlrk)
How do I integrate x^2/4-x?

Thank you!
An alternative method would be to substitute u=4-x
7. (Original post by Mr M)
If you can't remember how to divide polynomials you could note that:

Huh...I have never approached it like that!
8. (Original post by keromedic)
Huh...I have never approached it like that!
It's just another way of approaching the problem of rewriting the integrand in a simpler way - polynomial long division will always work, but if you can spot a trick like this it always helps!
9. (Original post by davros)
It's just another way of approaching the problem of rewriting the integrand in a simpler way - polynomial long division will always work, but if you can spot a trick like this it always helps!
Thanks
I get how this works. I hate long division so kind of do what MrM did but rather unintuively Through use of the remainder theorem.
Think it goes something like
..

Turn on thread page Beta
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: November 21, 2013
Today on TSR

### Oxford Interviews

Find out which colleges are sending invitations

Poll
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

### Study habits of A* students

Top tips from students who have already aced their exams

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