Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    1
    ReputationRep:
    Not sure how to do part A. Pretty confused. Anyhelp would be great.
    Attached Images
     
    Offline

    2
    ReputationRep:
    did you actually name yourself after this question? That's commitment
    Offline

    19
    ReputationRep:
    (Original post by Maths help pls)
    Not sure how to do part A. Pretty confused. Anyhelp would be great.
    differentiation using the chain rule
    (or notice something special about that log depending on what board you are on)
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by jlsmpV2)
    did you actually name yourself after this question? That's commitment
    Yep!
    (Original post by TeeEm)
    differentiation using the chain rule
    (or notice something special about that log depending on what board you are on)
    It is dumb of me but thats what I am confused about, I am not sure what to split it into . My brain is dead today.
    Offline

    19
    ReputationRep:
    (Original post by Maths help pls)
    Yep!


    It is dumb of me but thats what I am confused about, I am not sure what to split it into . My brain is dead today.
    there is nothing to split

    either you use the chain rule (pretty standard )


    or

    you notice that this is nothing but arsinh(x)
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by TeeEm)
    there is nothing to split

    either you use the chain rule (pretty standard )


    or

    you notice that this is nothing but arsinh(x)
    See i told you my brain is dead. I was thinking of chain rule as the product rule:facepalm:
    Offline

    19
    ReputationRep:
    (Original post by Maths help pls)
    See i told you my brain is dead. I was thinking of chain rule as the product rule:facepalm:
    hopefully you can now do it
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by TeeEm)
    hopefully you can now do it
    Yep. It's weird, sometimes I just get these mental blocks where I literally cannot do anything even if I know it. This would have taken me max 2-3 mins (part A) if I was really paying attention but took me an hour or two to do it. Just not my day today
    Offline

    19
    ReputationRep:
    (Original post by Maths help pls)
    Yep. It's weird, sometimes I just get these mental blocks where I literally cannot do anything even if I know it. This would have taken me max 2-3 mins (part A) if I was really paying attention but took me an hour or two to do it. Just not my day today
    it happens ...
    Offline

    12
    ReputationRep:
    (Original post by Maths help pls)
    Not sure how to do part A. Pretty confused. Anyhelp would be great.
    Think about how Arsinh and Arcosh can be written in terms of natural logs.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: October 31, 2015
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?
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.