z1+ z2+1 = 4 .. (I)
z1-z2+1 = 2-2i .. (II)
So, l(I)/(II)l = l2/(1-i)l = l2l/l1-il = 2/√2 = √2
2 Answers
Asish Mahapatra
·2009-04-20 19:50:05