Determine the Laurengies expansions of f(2) = in the regions: z(1+2²)(4 – 2²) c) |z| > 2. b) 1<|z| < 2,

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.3: Geometric Sequences
Problem 44E
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I) LAURENT SERIES EXPANSIONS AND ISOLATED SINGULARITIES
(SESSION 10)
1. Determine the Laurentgies expansions of f(z) =
in the regions:
z(1+2²)(4 – 2²)
c) |z| > 2.
b) 1< |z| < 2,
Transcribed Image Text:I) LAURENT SERIES EXPANSIONS AND ISOLATED SINGULARITIES (SESSION 10) 1. Determine the Laurentgies expansions of f(z) = in the regions: z(1+2²)(4 – 2²) c) |z| > 2. b) 1< |z| < 2,
I) LAURENT SERIES EXPANSIONS AND ISOLATED SIN
1
1. a) f(z) =
4z
1
1
C((-1)"+1 + )n+1,
4n+2
n=0
1
b) f(z) =
(-1)"
22n-1
1
22n+3
n=0
4n+1
n=0
1
c) f(2) =E(-1)" – 4")-
22n+3°
n=0
(-i)"
1
n+1
2.
f(2) =
+
(z – i)n+1
n=0
(-1)n+1 1
3.
f(2) = 2i
2n +1 z2n+1 °
n=0
Transcribed Image Text:I) LAURENT SERIES EXPANSIONS AND ISOLATED SIN 1 1. a) f(z) = 4z 1 1 C((-1)"+1 + )n+1, 4n+2 n=0 1 b) f(z) = (-1)" 22n-1 1 22n+3 n=0 4n+1 n=0 1 c) f(2) =E(-1)" – 4")- 22n+3° n=0 (-i)" 1 n+1 2. f(2) = + (z – i)n+1 n=0 (-1)n+1 1 3. f(2) = 2i 2n +1 z2n+1 ° n=0
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