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How to get the ceofficients of a expression derived by ODE or integral ? For exampli,C1 and C2 in u

조회 수: 1(최근 30일)
Guoyao.Li 2021년 8월 25일
편집: Guoyao.Li 2021년 8월 26일
syms rho a b E omega u(r) mu
u = 


James Tursa
James Tursa 2021년 8월 25일
Typically these would be obtained by combining the solution with initial values for u. Do you have initial values?
  댓글 수: 1
Guoyao.Li 2021년 8월 26일
I know that the specific solution for u needs initial conditions,but I want to extract the ceofficients of general solution,which are C1 and C2.And then using ''subs'' in MATLAB to subsitute C1 and C2 with specific value.However,it fails if I directly use syntax "u=subs(u,[C1 C2],[1 2])".
I have tried to use "children" syntax in MATLAB to extract C1 and C2 in u and it succeeds, but I think it's a little tedious.Is there any simple way to do it?

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