Given \(f\left( z \right) = \frac{{{z^2}}}{{{z^2} \;+ \;{a^2}}}\). Th – McqOptions

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1.	Given \(f\left( z \right) = \frac{{{z^2}}}{{{z^2} \;+ \;{a^2}}}\). Then
A.	z = ia is a simple pole and \(\frac{ia}{2}\) is a residue at z = ia of f(z)
B.	z = ia is a simple pole ia is a residue at z = ia of f(z)
C.	z = ia is a simple pole and \(-\frac{ia}{2}\) is a residue at z = ia of f(z)
D.	none of the above
Answer» B. z = ia is a simple pole ia is a residue at z = ia of f(z)

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