i) Use the residue theorem to evaluate 2z+6 dz, where c is the circle |z – i| = 2. z²+4

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
i)
Use the residue theorem to evaluate
2z+6
dz, where c is the circle |z – i| = 2.
Yc z2+4
z+3
ii)
dz,
Use Cauchy's integral formula (II) to evaluate P. 75+2z4
where c is the circle |z| = 1.
%3D
dz
iii)
Find an upper bound for 9.
dz, where c is the circle |z| = 4.
%3D
z*-5z²+6
Transcribed Image Text:i) Use the residue theorem to evaluate 2z+6 dz, where c is the circle |z – i| = 2. Yc z2+4 z+3 ii) dz, Use Cauchy's integral formula (II) to evaluate P. 75+2z4 where c is the circle |z| = 1. %3D dz iii) Find an upper bound for 9. dz, where c is the circle |z| = 4. %3D z*-5z²+6
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