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Homework Help: Hyperbolic functions ((

  1. Apr 22, 2010 #1
    Hyperbolic functions :(((

    1. The problem statement, all variables and given/known data
    Question is:
    288rq5w.png
    and 2v8q24y.png


    2. Relevant equations

    Now from what i can recall the formula for sin(A+B) = sinAcosB+sinbcosA
    so same goes for hyperbolic function i suppose?
    sinh(2x+x) = sinh2xcoshx+cosh2xsinx
    (2sinhxcoshx)coshx + (cos^2hx+sinh^2hx)sinx :/ am i on the right track... what confuses me are the identities of cosh2x .

    EDIT: WOULD I USE COSH2X= 1+2SINH^2X?
    CONFUSED :(
    Thanks for your input in advance!
    3. The attempt at a solution
     
  2. jcsd
  3. Apr 22, 2010 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hi ibysaiyan! :smile:

    (try using the X2 tag just above the Reply box :wink:)
    You can use either (cosh2x+sinh2x) or 1 + 2sinh2x :smile:
     
  4. Apr 22, 2010 #3
    Re: Hyperbolic functions :(((

    Hello there! thanks for replying but lol i have just over-confused myself :(
     
  5. Apr 22, 2010 #4
    Re: Hyperbolic functions :(((

    OHHHH I GET IT NOW.. i was subbing an 2x where actually it was just an 'x'.
    Thanks for the reply though ;)
     
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