# Solving for a variable with varying parameters in the sum

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Jigsaw on 21 Mar 2019
Commented: Jigsaw on 22 Mar 2019
being the unknown variable, how to initialize and write the following equation in matlab script containing varying paramters.
(n = 0,1,2,...)
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Jigsaw on 22 Mar 2019
@Kevin
Tried implementing using symbolic variables. It gets complicated and confusing considering the summation and varying m as well as n values.

Walter Roberson on 21 Mar 2019
You cannot. That describes an infinite summation where you need to solve all infinite I_m values.
You cannot truncate it because truncation would imply that if you were to make some I_m indefinitely big for some "large" m, that it would not make a substantial difference to the summation -- but clearly if you know the a_m c_m_n R_m_n values then you can create a corresponding I_m value that overwhelms any previous sum you might have had.
Torsten on 22 Mar 2019
How do you intend to exclude the trivial solution I_m = 0 for all m ?

R2017b

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