Lie Bracket via Conjugation: Why Ad Is Smooth

A walk through the first module of a beginner Python course: what each drawing line teaches, which mistakes stay silent, and where a picture-first approach stops being enough.

Three tracks, three outcomes: a prosecutor who declined, a campus process that expelled two students, and a civil suit now under political review. Here is how they fit together.

Substituting a parabola into an ellipse gives a quartic, so the discriminant trick fails. Three derivations lead to the same polynomial in b, with two real roots.