Q.Choose the correct answer.
Q. Let C=|z-2|=5, then evaluate the complex integral ∫_C▒〖(z^4 〗+4z)〖cos〗^2 zdz
a. 1
b. 0
c. π
d. -1
1
Expert's answer
2019-07-10T13:00:10-0400
Integrand is analytic in region "|z-2|<5" because it can be represented as a convergent power series in any point of the region. So according to Cauchy's integral theorem the integral is equal to 0. Answer: b.0
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