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What this circle mean?

  1. Mar 5, 2009 #1
    what this circle mean??

    v is vectoric space of all polinomials <=3 with coefficient of R
    i need to find the operator of
    T=D+D\circ D

    find T regarding b={1,t,t^2,t^3} of V
  2. jcsd
  3. Mar 5, 2009 #2


    Staff: Mentor

    Re: what this circle mean??

    It usually means composition. For example, [itex](f \circ g)(x)[/itex] is f(g(x)).
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