Join TSR now and get all your revision questions answeredSign up now

C2 logs confusion Watch

    • Thread Starter
    Offline

    2
    ReputationRep:
    So i'm a little confused. Why isn't the 1/2 taken to be a power then quadratic is formed. Here they just added them it seems.. :confused:

    It's probably something obvious I don't see
    Attached Images
     
    Offline

    3
    ReputationRep:
    (Original post by I'msoPi)
    So i'm a little confused. Why isn't the 1/2 taken to be a power then quadratic is formed. Here they just added them it seems.. :confused:

    It's probably something obvious I don't see
    What quadratic...?

    \log(x)+\frac{1}{2}\log(x)=\log(  x)+\log(x^{1/2})=\log(x\cdot x^{1/2})=\log(x^{3/2})=\frac{3}{2}\log(x)
    Online

    3
    ReputationRep:
    This is equal to (1/2+1)log2(x) that is the same as (3/2)log2(x)
    Or
    log2(x^1)+log2(x^1^/^2) identical to 1*log2(x)+0.5*log2(x)

    There is no quadratic formed in this identity you are 1 step from the end from the given identity
    Offline

    1
    ReputationRep:
    (Original post by I'msoPi)
    So i'm a little confused. Why isn't the 1/2 taken to be a power then quadratic is formed. Here they just added them it seems.. :confused:

    It's probably something obvious I don't see
    You have to use the log rules
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by RDKGames)
    What quadratic...?

    \log(x)+\frac{1}{2}\log(x)=\log(  x)+\log(x^{1/2})=\log(x\cdot x^{1/2})=\log(x^{3/2})=\frac{3}{2}\log(x)
    Gosh! As soon as I pressed send I realised it cant possibly be a quadratic. I'm so silly :laugh:
    • Thread Starter
    Offline

    2
    ReputationRep:
    (Original post by I'msoPi)
    So i'm a little confused. Why isn't the 1/2 taken to be a power then quadratic is formed. Here they just added them it seems.. :confused:

    It's probably something obvious I don't see
    Aha thanks for everyone waking me up. I've had a long day :sleep:
 
 
 
Poll
Should schools shut at lunch to save money?
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

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