[Error: Function definition not supported in this context. Create functions in code file

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LAI TING-JUI
LAI TING-JUI 2022-5-28
评论： LAI TING-JUI 2022-5-31
clc; clear;
% dy = zeros(2,1); % y(1) = y ; y(2) = dy
% y = y(1);
% dy(1) = y(2);
% dy(2) = t- 4*y(2)-4*y(1);
f = @(t,y) [y(2) ; t- 4*y(2)-4*y(1)];
%-----------------------------------------
% To slove the BVP by the shooting method.
x = 0.5;
x1 = fzero(F,x);
%-----------------------------------------
% The problem are here ! ! ! I have a problem that I have been thinking about for a long time and still can't solve.
% To slove the ODE by ode45.
function F = solver(x);
options = odeset ('RelTol', 1e-8, 'AbsTol',[1e-8, 1e-8]);
[t,y] = ode45(f, [0 1], [1 x], options);
F = y(length(t),1)-1;
end
%----------------------------------------
figure(1);
plot(t,y(:,1));

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采纳的回答

Voss
Voss 2022-5-28
To get past that particular error, move all the function definitions to the bottom of the script.
I've done this for the m-file script uploaded with the question, and the updated script is attached here.

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