Find coefficient in symbolic expression or matrix in matlab

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Amir Ehsani
Amir Ehsani 2012-10-27
评论： Ozgur 2015-2-18
I have the equation below: 2*x+3*y+4*z I want to separate the coefficients from syms. I want a function that its result from my equation be [2 3 4] "some times maybe my coefficients be a symbol too. "

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Star Strider
Star Strider 2012-10-27
编辑：Star Strider 2012-10-27
This should do what you want:
syms x y z
f = 2*x+3*y+4*z
cf = coeffs(f, [z y x])
It results in:
cf =
[ 2, 3, 4]
See the coeffs documentation for more information.

更多回答（1 个）

Azzi Abdelmalek
Azzi Abdelmalek 2012-10-27
编辑：Azzi Abdelmalek 2012-10-27
syms x y z
u=2*x+3*y+4*z
[c,t] = coeffs(u, [x y z])

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