Find coefficient in symbolic expression or matrix in matlab

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. "

Answer 1

[Star Strider]

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.

[Amir Ehsani]

thanks

[Ozgur]

I do not know if you noticed, but this code above doesn't result as [2,3,4]. It results equation itself...

Answer 2

[Azzi Abdelmalek]

syms x y z
u=2*x+3*y+4*z
[c,t] = coeffs(u, [x y z])

[Amir Ehsani]

thanks