MATH U101 · Narrated walkthrough · Tutorial 7 · Module 6 §14.7
Absolute max and min on a triangle: the routine’s twin
A short narrated lesson on Tutorial 7 Q4 — the same four-step routine as the diamond walkthrough, with one new twist. Press play, keep the sound on, and answer the three questions it stops to ask you.
About five minutes, watch once. The narration stops three times to ask what the next move is. Commit to an answer before it continues: those pauses are the point, because they practise starting a question, not following one. Captions are on by default; the full transcript is below the player.
Do the routine on a fresh region: start drill, family F10 (absolute extrema). The full written solution, with every edge, is on the tutorial companion. The first walkthrough in this pair runs the same routine on a diamond: 2024 mid-sem Q2(a). The four headings are written up in Module 6 notes.