Ms Jones gave the inequality −?? < 5 to the learners and got them find the solution set of the inequality. One of the learners divided both sides of the inequality with -1 and got the solution as ?? > −5. Then, another learner asked why the direction of the inequality sign was changed when both sides of it were divided by -1. What would you tell the learner if you were the teacher in the classroom?
Ms Jones gave the inequality −?? < 5 to the learners and got them find the solution set of the inequality. One of the learners divided both sides of the inequality with -1 and got the solution as ?? > −5. Then, another learner asked why the direction of the inequality sign was changed when both sides of it were divided by -1. What would you tell the learner if you were the teacher in the classroom?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Ms Jones gave the inequality −?? < 5 to the learners and got them find the solution set of the inequality. One of the learners divided both sides of the inequality with -1 and got the solution as ?? > −5. Then, another learner asked why the direction of the inequality sign was changed when both sides of it were divided by -1. What would you tell the learner if you were the teacher in the classroom?
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