sparse arrays and ODE

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Antonio 2012-6-18

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https://ww2.mathworks.cn/matlabcentral/answers/41440-sparse-arrays-and-ode

Hi all,

I am using the ODE solver of matlab. I pass as an input a sparse array but the ODE solver always gives a solution in terms of non-sparse arrays. Since my dydt matrix is sparse, I would like to take advantage of the sparse product. How can I force the ODE to use sparse arrays?

Thanks!!