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Find the range of the function defined by f(z)=Re[2iz/(1-z2)].

Posted: Thu Jul 14, 2022 9:41 am
by answerhappygod
a) (−∞, 0) ⋃ (0, ∞)
b) [2, ∞)
c) (−∞, −1] ⋃ [1, ∞)
d) (−∞, 0] ⋃ [2, ∞)