Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
 You are Here: Home >< Maths

# Why is this wrong? C3 Differentiation. watch

1. Differentiating ln(1/3x)

Compare the two workings, the 1st one is correct, the 2nd one is wrong. but Why?

Spoiler:
Show

2. (Original post by SaadKaleem)
Differentiating ln(1/3x)

Compare the two workings, the 1st one is correct, the 2nd one is wrong. but Why?
Spoiler:
Show

3. (Original post by aymanzayedmannan)
Alright, thank you... can be quite tempting to write it as (3x)^-1
4. (Original post by SaadKaleem)
Alright, thank you... can be quite tempting to write it as (3x)^-1
can be written as but .

Remember than constants are unchanged when differentiating (or integrating) linear functions.
5. (Original post by aymanzayedmannan)
can be written as but .

Remember than constants are unchanged when differentiating (or integrating) linear functions.
Thanks once again.

Reply
Submit reply
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: April 13, 2016
Today on TSR

### Loughborough better than Cambridge

Loughborough at number one

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

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