- #1
Metahominid
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Homework Statement
I'm not very good with LaTeX and the reference button seems to broken.
So
Assume lim h(z) = 1+i, as z->w, prove there exists a delta, d>0
s.t. 0<|z-w|<d -> (2^.5)/2 < |h(z)| < 3(2^.5)/2
Homework Equations
The Attempt at a Solution
Kinda been running in circles but from assumption
there exists d>0 s.t. 0<|z-w|<d -> |h(z) - (1+i)| < e (e > 0, epsilon)
So
|h(z)| = |h(z) - (1+i) + (1+i)| <= |h(z) - (1+i)| + |(1+i)|
therefore |h(z)| < e + |1+i| = e + (2^.5)
This seems alright so far but I feel like there is a much better way so
continuing for the other part of the inequality doesn't seem right