A value of θ for which is purely imaginary, is :
As we learnt in
Purely Real Complex Number -
& i2=-1
- wherein
Real part of z = Re (z) = x & Imaginary part of z = Im (z) = y
Let
for pure for real part must be zero.
Correct option is 4.
Option 1)
This is an incorrect option.
Option 2)
This is an incorrect option.
Option 3)
This is an incorrect option.
Option 4)
This is the correct option.
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