Let U be a simply connected domain with a simple closed boundary curve C oriented anticlockwise, and define g(w) for all values of w in the complex plane except C. Evaluate g(w) explicitly in terms of w.
I can't really understand what the question is asking, or how to get started. Any help?
Not sure either. Maybe apply residue theorem if w is inside C?
>>8284104
This, they want you to consider the two cases of w inside C or w outside C
>>8284090
>Complexer then complex
No, this is merely complex.
Lrn2hypercomplex fgt pls
Eng2092?
Btw, Cauchy's Integral Formula part 2.
What did you get for question 2 dude?
>>8284108
Or just use Cauchy's Integral Formula.
>>8284196
Don't think you need to parametrize it, just use path deformation and apply Cauchy's Integral Formula
>>8284209
Just checked lecture notes and you seem right.
Thanks a lot mate, seems every question just got a whole lot easier.
Q2 was easy, second derivative, treat as two loops
C1 + C2 = 4piei
>>8284217
Second derivative? Don't you just break it into two loops and apply cauchy's integral formula to both? I got -4pi*i
>>8284090
I got 2pi*icos(w) - anyone else?
No, because if you don't take the derivative you get f(x)/(1-1)^2 which is undefined, recheck your signs
I got 2pie * i*cos (w) when evaluating z = w
Look at last page of lecture 8 notes
>>8284262
Do you actually need to use residue theorem? Cause I just applied cauchy's integral formula and got the same result
Keep in mind that the pole at w in the integral isn't of order 2 when sin(w) = 0.
So you need to consider the 3 cases:
1. w outside of U
2. w inside of U and sin(w) =/= 0
3. w inside of U and sin(w) = 0.