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: Adjoint linear operator

  1. Mar 25, 2010 #1
    If L is the following first-order linear differential operator
    L = p(x) d/dx
    then determine the adjoint operator L* such that
    integral from (a to b) [uL*(v) − vL(u)] dx = B(x) |from b to a|
    What is B(x)?

    sorry.. on my book theres only self-adjointness

    i dont quiet understand what is the adjoint liear operator.

    may someone solve this problem and tell me what exactly adjoint linear operator is ?
     
  2. jcsd
  3. Mar 25, 2010 #2

    Fredrik

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    The adjoint [itex]A^\dagger[/itex] of a linear operator [itex]A[/itex] is defined by [itex]\langle x,Ay\rangle=\langle A^\dagger x,y\rangle[/itex]. Physicists write the adjoint as [itex]A^\dagger[/itex], mathematicians write it as [itex]A^*[/itex]. A is self-adjoint if [itex]A^\dagger=A[/itex].
     
  4. Mar 25, 2010 #3
    how to find the A* then.. sry :(
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook