Manipulating an inequality

  • Thread starter shawli
  • Start date
  • #1
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In an example in my textbook, it says the following:

"If -1 ≤ x ≤ 1, then 0 ≤ x2 ≤ 1. "


Can someone explain to me how to move from the first statement to the second statement please? I'm not quite sure how the -1 turned into a 0...
 

Answers and Replies

  • #2
Dick
Science Advisor
Homework Helper
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Did you draw a graph of x^2 on the interval -1 ≤ x ≤ 1?
 
  • #3
78
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Ah right... it's staring me right in the face! So clear that I missed it haha. Thank you!
 

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