I'm not sure exactly what you mean. Does this help?
In [1]: a, b, c, d, x, y, z = symbols('a, b, c, d, x, y, z')
In [2]: eq = a*x + b*y+ c*z - d
In [3]: eq
Out[3]: a⋅x + b⋅y + c⋅z - d
In [4]: eq.coeff(x)
Out[4]: a
In [5]: eq.coeff(y)
Out[5]: b
In [6]: eq.coeff(z)
Out[6]: c
On Tue, 25 Jun 2019 at 18:13, HGO HGO <hgohg...@gmail.com> wrote:
>
> hi
>
> is it possible given a plane equation to extract the coefficients a,b,c,d ?
>
> thank you
>
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