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Questions on the symbolic (DSolve, DifferentialRoot) and numerical (NDSolve) solutions of differential equations in Mathematica.
2
votes
1
answer
331
views
Solving for the coefficients of a series [duplicate]
Suppose I have a given series $A(z)=\Sigma a_nz^n$
I want to solve a differential equation for $B(z)$ in terms of coefficients of $a_n$ as a series. Possibly with ansatz $B(z)=\Sigma b_nz^n$ or other …
1
vote
1
answer
320
views
NDSolve Convergence Issue
I am trying to use NDSolve to solve r[u] equation below.
The problem seems like the slow convergence. I have searched some questions regarding this kind of problem. I think many people answered in so …