(z – 2i) (z – 3) Given f (z) = z? (z+5)3 (z-21) 4 Which of the following is correct ? oz =0 is a pole of order 3 oz = 2i is a pole of order 3 Oz = 2i is a pole of order 4 O z = 5 is a pole of order 3

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(z- 2i) (z - 3)
Given f (z) =
2 (z +5)3 (z-21)4
Which of the following is correct ?
Oz =0 is a pole of order 3
oz = 2i is a pole of order 3
Oz = 2i is a pole of order 4
Oz = 5 is a pole of order 3
Transcribed Image Text:(z- 2i) (z - 3) Given f (z) = 2 (z +5)3 (z-21)4 Which of the following is correct ? Oz =0 is a pole of order 3 oz = 2i is a pole of order 3 Oz = 2i is a pole of order 4 Oz = 5 is a pole of order 3
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