I think that this code has been successful once:
R.<x, y> = QQ[]
T.<t> = QQ[]
sb = {x: t, y: t^2}
X = vector(R.gens())
X.subs(sb)
This one works:
R.<x, y, z> = QQ[]
T.<t, t0, t1> = QQ[]
F = (y * z - x^2)^2 - x^3 * z
sb = {x:t^2, y:t^3 + t^4, z:1}
X = vector(R.gens())
X.subs(sb)
But the result is (x^2, x^4 + x^3, 1)
What am I doing wrong
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