Скачать или смотреть Solving Quadratic Inequalities | Nov 2024 Grade 11 Math Exam | iCampSA

In this lesson, we solve a tricky inequality question from the November 2024 Mathematics Paper 1. We walk through how to solve (x+1)(4-x) greater than 0 specifically when x is an element of Natural Numbers.
Key concepts covered
Changing the signs and flipping the inequality [02:57].
Finding critical values (CVs) for the equation [03:29].
Using the Parabola Method (Graph Method) to find the solution set [04:54].
Applying the constraint: Why we only choose 1, 2, and 3 as solutions [10:28].
Lesson timestamps
00:00 - Understanding the problem and constraints
01:25 - Rearranging the equation (Taking out -1)
02:57 - The Golden Rule: Flipping the inequality sign
03:29 - Finding Critical Values
04:54 - Using the Parabola/Graph Method
08:36 - Writing the final solution set
08:48 - Applying the "Natural Numbers" constraint

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