Complex NumbersHard
Question
If z is a non-real complex number, then the minimum value of 
is :
is :Options
A.- 1
B.- 4
C.- 2
D.- 5
Solution
Let z = reiθ
= 5 cosec4θ - 20cosec2θ + 16
minimum value of
is - 4
= 5 cosec4θ - 20cosec2θ + 16
minimum value of
is - 4Create a free account to view solution
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