Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    8
    ReputationRep:
    Hi guys ,
    I'm trying to differentiate the function blow using chain rule but i keep getting wrong answers! do you think chain rule is the way to differentiate this
    Attached Images
     
    • Study Helper
    Offline

    16
    ReputationRep:
    Study Helper
    (Original post by Alen.m)
    Hi guys ,
    I'm trying to differentiate the function blow using chain rule but i keep getting wrong answers! do you think chain rule is the way to differentiate this
    It's a "function of a function", so you need to use the chain rule in some way or other

    Post some working if you're still stuck, and someone will take a look at it.
    Offline

    22
    ReputationRep:
    (Original post by Alen.m)
    Hi guys ,
    I'm trying to differentiate the function blow using chain rule but i keep getting wrong answers! do you think chain rule is the way to differentiate this
    So if we left f(x) = 2e - x, then you want to do d/dx(2 ln f(x)).

    Which is the same as 2 d/dx(ln f(x))).

    But the derivatve of ln f(x) is f ' (x) / f(x)
    Offline

    19
    ReputationRep:
    i remember i used to this at IGCSE MATHS EDEXCEL
    Sorry i never got thos question my questions were more lik
    differentiate
    2x^2-6x-15
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

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