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

    1
    ReputationRep:
    1/μ *dμ/dx =−2/x

    Find μ

    Can someone help me with this please?
    Offline

    16
    ReputationRep:
    It's variable separable. Multiple both sides by dx, integrate
    Offline

    2
    ReputationRep:
    \frac{1}{\mu}\frac{d\mu}{dx} = -\frac{2}{x}

    \frac{1}{\mu}d\mu = -\frac{2}{x}dx

    \int\frac{1}{\mu}d\mu = \int-\frac{2}{x}dx
    Offline

    16
    ReputationRep:
    (Original post by maxfire)
    \frac{1}{\mu}\frac{d\mu}{dx} = -\frac{2}{x}

    \frac{1}{\mu}d\mu = -\frac{2}{x}dx

    \int\frac{1}{\mu}d\mu = \int-\frac{2}{x}dx
    How to make it look prettier:

    use \displaystyle before your integrals
    use \dfrac rather than \frac

    So you can make it look like this:

    \dfrac{1}{\mu}\dfrac{d\mu}{dx} = -\dfrac{2}{x}

    \dfrac{1}{\mu}d\mu = -\dfrac{2}{x}dx

    \displaystyle\int\dfrac{d\mu}{\m  u} = -2\displaystyle\int\dfrac{dx}{x}
    Offline

    2
    ReputationRep:
    (Original post by Chwirkytheappleboy)
    How to make it look prettier:

    use \displaystyle before your integrals
    use \dfrac rather than \frac

    So you can make it look like this:

    \dfrac{1}{\mu}\dfrac{d\mu}{dx} = -\dfrac{2}{x}

    \dfrac{1}{\mu}d\mu = -\dfrac{2}{x}dx

    \displaystyle\int\dfrac{d\mu}{\m  u} = -2\displaystyle\int\dfrac{dx}{x}
    I know...:facepalm:

    I only use \dfrac if I have a lot to write on each side of the fraction, rather that one letter/number.

    And I only make the integral signs long if they're shorter than the function I'm integrating.
    Offline

    16
    ReputationRep:
    (Original post by maxfire)
    I know...:facepalm:
    Alright no need to be sarcastic I was just trying to be helpful... it just looks nicer when it's less cramped up
    Offline

    0
    ReputationRep:
    (Original post by Chwirkytheappleboy)
    Alright no need to be sarcastic I was just trying to be helpful... it just looks nicer when it's less cramped up
    wow does it really matter.. not like it was unclear anyway..
    Offline

    2
    ReputationRep:
    I see no sarcasm in my post.
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 8, 2010
Poll
Do you like carrot cake?
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.