Page 52 - ArithBook5thEd ~ BCC
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The relations “less than” and “greater than”
are reversed when signs are changed.
Example 40. Is −π greater than or less than −3?
Solution. On the ‘positive side,’ 3 < π. This relation is reversed when the signs are changed.
−π < −3.
Visually, −π lies (slightly) to the left of −3on the number line.
-π π
| | | | | | | | | | |
−5 −4 −3 −2 −1 0 1 2 3 4 5
−π < −3 but 3 < π.
2.2.1 Exercises
Insert the appropriate inequality symbol (< or >).
1. −7 0
2. 0 −7
3. −5 −7
4. 5 −7
√
5. 3 2
√
6. − 3 −2
√ √
7. 3 2
√ √
8. − 3 − 2
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