You are Here: Home >< Maths

# Differentiation C3 Watch

1. Am stuck on this..how to differentiate :

If I could convert it to ln I should be able to do it but dunno how to convert it to ln

+rep
2. Do you know the change of base formula? Written in terms of ln it is:

3. (Original post by notnek)
Do you know the change of base formula? Written in terms of ln it is:

So ln(6x/x-1)? How do you differentiate that?
4. (Original post by Junaid96)
So ln(6x/x-1)? How do you differentiate that?
Use the log law:

Or differentiate it directly using the normal method for finding the derivative of a natural logarithm. You need to use the quotient rule for that.
5. (Original post by notnek)
Do you know the change of base formula? Written in terms of ln it is:

oh that's it ..I had forgotten that
6. (Original post by arvin_infinity)

oh that's it ..I had forgotten that
The general law works for any base:

If c is the number e then you have the law which I gave in my last post.
7. (Original post by notnek)
The general law works for any base:

If c is the number e then you have the law which I gave in my last post.
You are a legend
This goes straight to my notes..
8. (Original post by arvin_infinity)
You are a legend
This goes straight to my notes..
I don't mean to sound patronising, but why you have notes? I've never made notes for maths
I always just did examples on paper and binned them afterwards - all the notes I need are neatly typed up in the textbook. It's pretty much the same for most people in my set, except most of them keep their example questions.
9. (Original post by Junaid96)
I don't mean to sound patronising, but why you have notes? I've never made notes for maths
I always just did examples on paper and binned them afterwards - all the notes I need are neatly typed up in the textbook. It's pretty much the same for most people in my set, except most of them keep their example questions.

Yh that was last year when I got an A for math..this year need A*..it's v different
10. (Original post by arvin_infinity)
Yh that was last year when I got an A for math..this year need A*..it's v different
I also need an A*, but I don't find notes very useful at all, as maths is not something you can rote learn - you learn it by doing it. Practice is key

Updated: June 10, 2012
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:
Today on TSR

### Stuck for things to do this summer?

Come and get some inspiration.

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
Study resources

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

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