1. Mathematics
2. Algebra
3. Basic Algebra
4. 24114

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ALL STEPS MUST BE SHOWN
PLEASE PROVIDE AN EXPLANATION IN COMPLETE SENTENCES

Here is the problem

Given and prove that there is a unique y>0 such that That is, exists and is unique

Hint: Consider y = the least upper bound of

Then use exercise 2 to show that can be neither less than x nor greater than x.