Iz1I^2 +Iz2I^2 -I z1^2+z2^2 I < 2Iaz1+bz2I^2 /a^2+b^2 < Iz1I^2 +Iz2I^2 +Iz1+z2I^2

where a and b are non zero real no. and z1 , z2 are any two complex no.

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