| 1 | initial version |
Yes you are completely right
eqns=[(a,b,c,d)]
means exactly
a+b*x_1+c*x_2+d*x_3=0
The same is true for inequalities where = is replaced by ">=".
You can also plot the corresponding surface in R^3 with
plane3.show()
which should make clear who to interpret the equation.
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