Family of polar curves Limacons. Plane Curves I, Yusuf, Lec-46, (Urdu/Hindi)

Whole-channel inclusion: MathLogic is an honest teaching channel (title sample + 3 transcripts read: The one sample with a transcript is a structured math lecture deriving moment of inertia formulas, consistent with the channel's teaching verdict.); this title passed a strict title check (sonnet) after a labelling pass.