- #1
imranq
- 57
- 1
Homework Statement
Given x > 0 and [tex]n \in N[/tex], prove that there is a unique y > 0 s.t. [tex]y^n = x[/tex] exists and is unique
Homework Equations
Hint is given: consider [tex]y = 1. u.b. \{s \in R : s^n < x\} [/tex]
The Attempt at a Solution
I'm not used to this style of proof (real analysis I), help would be appreciated, thanks. BTW, what does "u.b." signify?