Results 1 to 2 of 2

Math Help - PDE

  1. #1
    Newbie
    Joined
    Apr 2012
    From
    alger
    Posts
    9

    PDE

    Can we say that the boundary integral conditions= the nonlocal boundary condition?!!
    -When the generalized solution = the weak solution?
    -What's the norm of the sobolev space H^{-r} and how we can say u_{m}^{p-2}u_{m} \in L^{q}(0,T;H^{-r})(\omega))?
    -In all the lemma 4.4....4.7 they try to use the norm in H^{-r})(\omega) why?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Aug 2012
    From
    USA
    Posts
    10

    Re: PDE

    Differentiation under the integral sign is a useful operation in calculus. Suppose that it is required to differentiate with respect to x the function

    F(x)= int_{a(x)}^{b(x)}f(x,t) ,dt,

    where the functions f(x,t) , and frac{ partial}{ partial x} ,f(x,t) , are both continuous in both t , and x , in some region of the (t,x) , plane, including a(x) leq t leq b(x) ,, x_0 leq x leq x_1 ,, and the functions a(x) , and b(x) , are both continuous and both have continuous derivatives for x_0 leq x leq x_1 ,. Then for ,x_0 leq x leq x_1 , ,:

    frac{d}{dx} ,F(x) = f(x,b(x)) ,b'(x) - f(x,a(x)) ,a'(x) + int_{a(x)}^{b(x)} frac{ partial}{ partial x} , f(x,t) ; dt ,.





    __________________________

    Even Giants Born Small
    Free neuropathy remedies
    Follow Math Help Forum on Facebook and Google+

Search Tags


/mathhelpforum @mathhelpforum