For all complex numbers z satisfying Im(z)≠0, if f(z)=z2+z+1 is a real valued function, then find its range.
Posted: Thu Jul 14, 2022 9:41 am
a) (-∞, -1]
b) (-∞, 1/3)
c) (-∞, 1/2]
d) (-∞, 3/4)
b) (-∞, 1/3)
c) (-∞, 1/2]
d) (-∞, 3/4)
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