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: Integration (check my work)

  1. Feb 13, 2009 #1
    1. The problem statement, all variables and given/known data
    int sinh(2x) cosh(2x) dx


    u= sinh (2x)
    du= 2 cosh (2x)

    1/2 int u du

    1/2 (u^2)/2

    (sinh (2x))^2 / 4
     
  2. jcsd
  3. Feb 13, 2009 #2

    CompuChip

    User Avatar
    Science Advisor
    Homework Helper

    Looks just fine, except for one little typo where you wrote
    du= 2 cosh (2x)
    instead of
    du= 2 cosh (2x) dx

    And you forgot the integration constant :tongue:
     
  4. Feb 13, 2009 #3
    Why don't you differentiate your answer and see if you got what you started with...
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook