The real part of complex number when z becomes purely real will be
z will be purely real if 7-a=0
i.e. a=7
So, real part of z becomes 2x7=14
Option A
Purely Real Complex Number -
& i2=-1
- wherein
Real part of z = Re (z) = x & Imaginary part of z = Im (z) = y
Option 1)
This is correct
Option 2)
This is incorrect
Option 3)
This is incorrect
Option 4)
This is incorrect
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