Turn on thread page Beta

Will the real TeeEm please stand up! watch

  • View Poll Results: will the real TeeEm please stand up
    man on the desk
    19
    6.76%
    man in the library with lap top
    69
    24.56%
    man 3
    13
    4.63%
    bodybuilder
    43
    15.30%
    donkey
    52
    18.51%
    man eating sandwich
    25
    8.90%
    ginger
    60
    21.35%

    • Thread Starter
    Offline

    19
    ReputationRep:
    (Original post by Johann von Gauss)
    First one is probably a classic, second one is very easy
    second one is already done ... under 60 seconds
    Offline

    14
    ReputationRep:
    (Original post by TeeEm)
    second one is already done ... under 60 seconds
    I'm sorry, not hard enough?

    Q3 \int arccot(1 -x -x^2 ) \ dx

    Q4 \int arcsin(\sqrt{\dfrac{x}{a+x}} ) \ dx

    Q5 \int x (arctan(x))^2 \ dx

    • Thread Starter
    Offline

    19
    ReputationRep:
    (Original post by Johann von Gauss)
    I'm sorry, not hard enough?

    \int arccot(1 -x -x^2 ) \ dx

    \int arcsin(\sqrt{\dfrac{x}{a+x}} ) \ dx

    \int x (arctan(x))^2 \ dx

    \int \dfrac{x^3}{(x-1)(x-2)(x-3)}\ dx

    the first one is definitely very long and messy

    the last one very easy
    Offline

    14
    ReputationRep:
    (Original post by TeeEm)
    the first one is definitely very long and messy
    You like applied maths, surely long and messy is what keeps you going? I've got the answers anyway, and I agreed with them when I did it.

    Tomorrow I'll pick out the nice, tough, elegant ones, but atm its at random
    • Thread Starter
    Offline

    19
    ReputationRep:
    (Original post by Johann von Gauss)
    You like applied maths, surely long and messy is what keeps you going? I've got the answers anyway, and I agreed with them when I did it.

    I see ...

    Hopefully some of the big boys here will come and help me when I get stuck ...
    (my integration is not what is used to be)
    Offline

    3
    ReputationRep:
    Anyone willing to help with a probabilities question ?
    Offline

    19
    ReputationRep:
    (Original post by xyzmaster)
    Anyone willing to help with a probabilities question ?
    I might be able to (in general less likely if it is a counting-type question)
    Offline

    11
    ReputationRep:
    (Original post by TeeEm)
    the first one is definitely very long and messy

    the last one very easy
    Have you attempted the first one? If so, how did you go about it? I did it by parts then resolved into partial fractions. Its getting it into a more 'friendly' form that isn't obvious...
    Offline

    18
    ReputationRep:
    (Original post by Johann von Gauss)
    I'm sorry, not hard enough?

    \int arccot(1 -x -x^2 ) \ dx

    \int arcsin(\sqrt{\dfrac{x}{a+x}} ) \ dx

    \int x (arctan(x))^2 \ dx

    I cant see it on my flipping phone


    Posted from TSR Mobile
    • Thread Starter
    Offline

    19
    ReputationRep:
    (Original post by A Slice of Pi)
    Have you attempted the first one? If so, how did you go about it? I did it by parts then resolved into partial fractions. Its getting it into a more 'friendly' form that isn't obvious...
    Sorry I have not attempted any of them as I am going through one of my busiest spells.
    • Thread Starter
    Offline

    19
    ReputationRep:
    (Original post by physicsmaths)
    I cant see it on my flipping phone


    Posted from TSR Mobile
    It's about time you got a computer.
    Offline

    10
    ReputationRep:
    (Original post by TeeEm)
    It's about time you got a computer.
    savage
    Offline

    18
    ReputationRep:
    (Original post by TeeEm)
    It's about time you got a computer.
    LOL. I can see it in my IPAD.


    Posted from TSR Mobile
    • Thread Starter
    Offline

    19
    ReputationRep:
    (Original post by physicsmaths)
    LOL. I can see it in my IPAD.


    Posted from TSR Mobile
    IPADs are for girls ...
    Offline

    18
    ReputationRep:
    (Original post by A Slice of Pi)
    Have you attempted the first one? If so, how did you go about it? I did it by parts then resolved into partial fractions. Its getting it into a more 'friendly' form that isn't obvious...
    Haven't done it yet but Yh parts on 1 and arccot(etc) with u=arccot will most likely work, you can use the relation between arccot and arctan which might make it simpler but I'm not too sure without doing it.


    Posted from TSR Mobile
    Offline

    10
    ReputationRep:
    (Original post by TeeEm)
    IPADs are for girls ...
    (Original post by physicsmaths)
    x
    Looks like you need this physicsmaths http://www.britishburnassociation.org/burns-units
    Offline

    11
    ReputationRep:
    (Original post by physicsmaths)
    Haven't done it yet but Yh parts on 1 and arccot(etc) with u=arccot will most likely work, you can use the relation between arccot and arctan which might make it simpler but I'm not too sure without doing it.


    Posted from TSR Mobile
    I was wondering whether the arccot X +/- arccot Y formulae may help... I haven't tried this yet, however.
    Online

    18
    ReputationRep:
    (Original post by TeeEm)
    IPADs are for girls ...
    My daughter agrees...
    Online

    18
    ReputationRep:
    (Original post by physicsmaths)
    LOL. I can see it in my IPAD.
    Offline

    18
    ReputationRep:
    (Original post by DFranklin)
    My daughter agrees...
    Lol


    Posted from TSR Mobile
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: August 22, 2017

2,840

students online now

800,000+

Exam discussions

Find your exam discussion here

Poll
Should predicted grades be removed from the uni application process

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.