PRECALCULUS:GRAPHICAL,...-NASTA ED.
PRECALCULUS:GRAPHICAL,...-NASTA ED.
10th Edition
ISBN: 9780134672090
Author: Demana
Publisher: PEARSON
Expert Solution & Answer
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Chapter P.1, Problem 19E
Solution

The interval notation for the given interval of real numbers.

The interval notation for the given interval of real numbers is: −2,1

Given:

The interval of real numbers,

  PRECALCULUS:GRAPHICAL,...-NASTA ED., Chapter P.1, Problem 19E

Concept Used:

  • If there is the strict inequality symbol < or> , then use a parenthesis on the interval
  • If there is the inequality symbol ≤ or≥ , then use a bracket on the interval
  • To graph the endpoint with strict inequality < or>, use the open parenthesis or a hollow circle at that endpoint.
  • To graph the endpoint with inequality symbol ≤ or≥, use the bracket or a solid circle at that endpoint.

Calculation:

The given set of real numbers represents all the real numbers that are greater than −2 and less than 1.

Since the inequality sign is strict at both endpoints, use the open parenthesis with both the numbers.

Therefore, the interval notation for the given interval of real numbers is −2,1 .

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Chapter P.1, Problem 18E
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Chapter P.1, Problem 20E

Chapter P Solutions

PRECALCULUS:GRAPHICAL,...-NASTA ED.

Ch. P.1 - Prob. 1QRCh. P.1 - Prob. 2QRCh. P.1 - Prob. 3QRCh. P.1 - Prob. 4QRCh. P.1 - Prob. 5QRCh. P.1 - Prob. 6QRCh. P.1 - Prob. 7QRCh. P.1 - Prob. 8QRCh. P.1 - Prob. 9QRCh. P.1 - Prob. 10QR
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