Sum in an ode45?

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Peter
Peter 2011-12-11
I have the following differnetial equation
dy(1) = a*y(1)/N
where N is the sum of all the Y(i) at a given moment of time, not just at the beginning. How can I input this into ode45?
  2 个评论
Jan
Jan 2011-12-11
What are "all Y(i)"?
Walter Roberson
Walter Roberson 2011-12-11
What does y(1) indicate in this context? Evaluation at y = 1 ? The first of set of subscripted variables?

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