MATSEC AM Pure Mathematics Complete Prep Course — Lesson 41: The modulus function

Sarah Mitchell teaches the modulus function as distance from the origin, defined piecewise as x when x is at least zero and minus x below zero. She covers case-splitting, squaring both sides, checking for false solutions, sketching by reflecting negative parts upward, the V-shaped vertex, and the two standard inequality forms, noting that nested moduli are outside the MATSEC syllabus.

Lesson 41 of 158 in the MATSEC AM Pure Mathematics Complete Prep Course audio course from ExamPrepRise.

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