Express_as_exponent​ial_series

Version 1.1.0.0 (7.26 KB) by David H
Converts a symbolic expression S to the form S = sum_{k=1}^N c_k exp(b_k*t)
195 Downloads
Updated 24 Jun 2014

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This function is designed to convert a general expression into a sum of coefficients with exponential terms. This requires the use of the symbolic toolbox and is based mainly on character string logic, which may break down for complicated expressions.
The main motivation for such a series expression is to allow for the identification of fast rotating terms (applying a generalised rotating wave type approximation) and fast decaying terms in analytic time-correlation functions. This is also a very simple form for taking derivatives.

Cite As

David H (2024). Express_as_exponential_series (https://www.mathworks.com/matlabcentral/fileexchange/46905-express_as_exponential_series), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2014a
Compatible with any release
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes
1.1.0.0

Modified slightly to stop a bug when exponentials have no prefactor.

1.0.0.0