A question to improve my loop of ODE

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Yuxing Zhang 2018-10-17

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https://ww2.mathworks.cn/matlabcentral/answers/424409-a-question-to-improve-my-loop-of-ode

关闭： MATLAB Answer Bot 2021-8-20

I have a question which asks to solve a ODE problem, and I have done the main part codes except one loop. It asks to set dt=2^-2,2^-3,2^-4.....2^-8 for t=[0:dt:5], and finally save the output E for each dt as E_list vector. But I can only do with one dt value, so I want to know how can I improve my codes.(codes are in the figure below)