- #1
JPanthon
- 20
- 0
Homework Statement
This is my first delt/epsilon proof ever, so please understand if I seem ignorant.e=epsilon
d = delta
Let f(x) = 1/x for x>0
If e is any positive quantity, find a positive number d, which is such that:
if 0 < |x-2| < d, then |f(x) - 1/2| < e
Homework Equations
I don't really know of any :s
The Attempt at a Solution
|1/x - 1/2| < e
|2/x - 1| < 2e
|x/2 - 1| > 1/2e
|x - 2| > 1/e
and |x-2| < d
Therefore, 1/e < d
Is this sufficient? It says find a positive d, and I've only come up with an inequality with respect to e. Again, this is my first ever d/e proofs, so if I've overlooked some tremendously obvious error, I'm sorry.