The Modulus Sign #2

So now let us look at a simple relationship that many students memorise instead of understand. Below, we see a absolute function graph.

Credits: Wikipedia

Credits: Wikipedia

Now we all know that |x|<a gives us -a<x<a. So how did that happen? Consider drawing a horizontal line, y=a in the graph above. |x| is less than a only when -a<x<a. Similarly, |x|>a is true only when x>a or x<-a. I do hope that the graphical representation helps here.

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    • […] 19. Difference between H1 and H2 Math 20. Partial Fractions made easy 21. The Modulus Sign #1 22. The Modulus Sign #2 23. The Modulus Sign #3 24. The Modulus Sign #4 25. An easier approach to remembering discriminant […]

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