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Solution for integral_0^t exp(A(s))x ds?

  1. Dec 9, 2009 #1
    Dear all,
    do you know how to best calculate

    [itex]
    q(t) = \int_0^t \exp(A(s))v_0 ds
    [/itex]

    where [itex]A(s)[/itex] is a low order matrix polynomial in s, and v_0 is a constant vector of suitable dimension? I can of course use a general ODE solver, but I want to understand how small perturbations in A affect the final result. In particular I want to use something like
    [itex]
    A(s) = A_1(1-s) + A_2s + A_{12}s(1-s),
    [/itex]
    where the different A matrices are antisymmetric and do not generally commute (if they did commute the problem would not be very difficult).
     
  2. jcsd
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