Question

Expand by Laurent series (z-1)/z^2​

Answer 1

Answer:

It is an Example

Hint: use the Taylor series of (1+u)−2 at 0 after you have observed that

z−1z2=z−1((z−1)+1)2=1(z−1)⋅1(1+1z−1)2and∣∣1z−1∣∣<1⟺|z−1|>1.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

see the above attachment

their is ur answer

it's Isha

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