You are Here: Home >< Maths

# Integral help??????!!!!???? watch

1. I'm back with another integral, it's been a while, posted this somewhere else but may as well make a thread.

(i) Integrate with respect to .

(ii) Hence, or otherwise, evaluate the integral
,
2. (Original post by Ano123)
I'm back with another integral, it's been a while, posted this somewhere else but may as well make a thread.

(i) Integrate with respect to .
Note that:

3. (Original post by Zacken)
Note that:

How did you do it by inspection? Seen similar types before or just recognised it was the derivative of a relatively simple function?
4. (Original post by Ano123)
How did you do it by inspection? Seen similar types before or just recognised it was the derivative of a relatively simple function?
Just recognised. Shouldn't be too hard to do as a geometric series with a first term and common ratio either.
5. (Original post by Zacken)
Just recognised. Shouldn't be too hard to do as a geometric series with a first term and common ratio either.
I should have made it more difficult with a square root or something.
6. (Original post by Ano123)
I should have made it more difficult with a square root or something.
*shrugs* indefinite integrals are boring. It means that an elementary anti-derivative exists which is a buzzkill assumption.
7. (Original post by Zacken)
*shrugs* indefinite integrals are boring. It means that an elementary anti-derivative exists which is a buzzkill assumption.
What would you prefer then?
8. (Original post by Ano123)
What would you prefer then?
Definite ones, then elementary antiderivatives need not exist.

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: April 25, 2016
Today on TSR

### The most controversial member on TSR?

Who do you think it is...

### Uni strikes! How do they affect you?

Discussions on TSR

• Latest
Poll
Useful resources

### 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

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest

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