Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Please Help me to complete the answer

  1. Dec 7, 2008 #1
    Hi all,
    can anybody complete my answer?(I'm unable to solve the second part of the integral)
    problem and answer(incomplete) : www.andishe9.com/integral.bmp[/URL]

    thanks and excuse me for english;)
     
    Last edited by a moderator: Apr 24, 2017
  2. jcsd
  3. Dec 7, 2008 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

     
    Last edited by a moderator: Apr 24, 2017
  4. Dec 8, 2008 #3
    Thank you,
    I checked the link.It works...
     
  5. Dec 8, 2008 #4

    gabbagabbahey

    User Avatar
    Homework Helper
    Gold Member

    ermmm...your very first line is incorrect: your basically claiming that [itex](2x+6)-6=1[/itex] which is clearly false.

    Try a u-substitution of the form [itex]u=x+3[/itex] instead.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook