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How to customize the way MATLAB combines an expression with a lot of symbols?

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FAISAL ALQARNI
FAISAL ALQARNI 2023-7-24
评论： Dyuman Joshi 2023-7-25
The expression below is combined in terms of phi_dot, theta_dot and psi_dot. I want it to be combined in terms of i_B, j_B and k_B. So how to tell MATLAB what variables I want it to consider when combining the terms of an expression?

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Dyuman Joshi
Dyuman Joshi 2023-7-24
Use collect
I assume you already have the Symbolic Math Toolbox

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