# 8.3.3 EXERCISE Prove the following facts. 1. 1 R+ and-1 in R-. 2. If a e...

###### Question:

8.3.3 EXERCISE Prove the following facts.
1. 1 R+ and-1 in R-. 2. If a e R+, then R+, and if a R-, then E R-. We said in Section 8.2 that once we have the concept of the positive numbers we can define an order on R.

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