- #1
jrsweet
- 32
- 0
Homework Statement
Show that there is an x∈R such that x^3+x=6.
The Attempt at a Solution
I'm not exactly sure where to get started with this proof. I think I would need to define a set S={x∈R: x>0 and x^3+x≤6}. Assume S is bounded, and then find lub(S)...?