1.

Given Δ=∣∣∣∣P2−ii+12+iq3+i1−i3−ir∣∣∣∣, Δ is

Answer»

Given Δ=∣∣
∣
∣
P2−ii+12+iq3+i1−i3−ir∣∣
∣
∣
, Δ is



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