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

    1
    ReputationRep:
    



\int \frac {x+1}{x^2+4x+5} dx

    Thank you
    Offline

    17
    ReputationRep:
    (Original post by Maths6186a)
    



\int \frac {x+1}{x^2+4x+5} dx

    Thank you
    write it as  \displaystyle \int \frac {x+2}{x^2+4x+5} \:dx - \int \frac{1}{x^2+4x+5} \: dx

    left hand side is of the form  \displaystyle k\int \frac{f'(x)}{f(x)} and right hand side can be done by completing the square and using a tan substitution
    • Community Assistant
    • Welcome Squad
    Online

    20
    ReputationRep:
    Community Assistant
    Welcome Squad
    (Original post by Maths6186a)
    



\int \frac {x+1}{x^2+4x+5} dx

    Thank you
    But I don't want to integrate it
    Offline

    19
    ReputationRep:
    Ask WolframAlpha if you're too lazy to do it yourself.
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by alow)
    Ask WolframAlpha if you're too lazy to do it yourself.
    So me not knowing how to do something = me being to lazy to do it?
    • Community Assistant
    • Welcome Squad
    Online

    20
    ReputationRep:
    Community Assistant
    Welcome Squad
    (Original post by Maths6186a)
    So me not knowing how to do something = me being to lazy to do it?
    Why are you doing a question where you have no idea how to approach it then?? Learn about these integrals first.
    Offline

    17
    ReputationRep:
    (Original post by Maths6186a)
    So me not knowing how to do something = me being to lazy to do it?
    No, you just said 'integrate this.' You didn't post any of your own ideas/attempts and did not mention where you were stuck. You're not asking for help; you're just asking for the whole solution. That is being lazy.
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by RDKGames)
    Why are you doing a question where you have no idea how to approach it then?? Learn about these integrals first.
    Sorry sir. Am I getting a detention now?
    • Thread Starter
    Offline

    1
    ReputationRep:
    (Original post by IrrationalRoot)
    No, you just said 'integrate this.' You didn't post any of your own ideas/attempts and did not mention where you were stuck. You're not asking for help; you're just asking for the whole solution. That is being lazy.
    I didn't mention where I was stuck because I had no idea how to do it from the beginning. I spent a good while failing to do the problem before posting on here. Silly billy.
    Offline

    17
    ReputationRep:
    (Original post by Maths6186a)
    I didn't mention where I was stuck because I had no idea how to do it from the beginning. I spent a good while failing to do the problem before posting on here. Silly billy.
    "You're not asking for help; you're just asking for the whole solution."

    Anyway it's pretty sad that you post a thread demanding the complete solution to a problem and then you try to patronise the people who explain what's wrong with that.
    Offline

    9
    ReputationRep:
    (Original post by IrrationalRoot)
    "You're not asking for help; you're just asking for the whole solution."

    Anyway it's pretty sad that you post a thread demanding the complete solution to a problem and then you try to patronise the people who explain what's wrong with that.
    not really
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Has a teacher ever helped you cheat?
    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
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • 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.