QUESTION 1 Let f(2)= z²+3z +5 (2²+9) cos() (1.1) Find the zeros of cos(4). You may use what is known about the zeros of cos z. (1.2) Evaluate [ƒ(2)dz, where C : |z − 1] = 1. Write your answer in the form a + ib.
QUESTION 1 Let f(2)= z²+3z +5 (2²+9) cos() (1.1) Find the zeros of cos(4). You may use what is known about the zeros of cos z. (1.2) Evaluate [ƒ(2)dz, where C : |z − 1] = 1. Write your answer in the form a + ib.
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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Transcribed Image Text:QUESTION 1
Let f(2)=
2² + 3z +5
(2² +9) cos(4)
(1.1) Find the zeros of cos(). You may use what is known about the zeros of cos z.
(1.2) Evaluate e [ f(z)dz, where C : |2 − 1| = 1. Write your answer in the form a + ib.
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