Question 93127
if z1=2+j, z2=3+j and z3=j3 
what is the equivalent impedance z if 
1/z= 1/z1 + 1/z2 + 1/z3 ?? this was a question given to us for homework and it was not in any text book

You didn't copy that z3=j3 right. It's gotta be something else. Fix it and
post again. 

Edwin