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March 27th, 2013, 07:53 AM   #1
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complex number - modulus problem

If where and are non zero complex numbers, then which one is correct

(a) Re

(b) Im


Can we take and

Now .......(i)

Also ....(ii)

Since (i) = (ii)

After solving these two equation i get : 4ax +4by=0 .....(iii)

What to do next ? could you please guide....
sachinrajsharma is offline  
March 27th, 2013, 11:15 AM   #2
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Re: complex number - modulus problem

the correct answer is a.
calculate z1/z2 and you get

you just proved that so Re(z1/z2)=0
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