expm_multiply in MATLAB

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Pranav Gupta
Pranav Gupta on 3 May 2019
I wish to calculate exp(At)v for a complex symmetric matrix A and a vector (or bunch of vectors) v.
expm is a great tool, but I am hoping to be faster (and more accurate?) by using something like expm_multiply(A,b), where I directly calculate exp(At)B, rather than computing expm(A) and then multiplying by B. Is there a MATLAB function for this kind of an expm operation?

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