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Evaluate `|(a+ib,c+id),(-c+id,a-ib)|` |
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Answer» Here, `A = |[a+ib,c+id],[-c+id,a-ib]|` `=>A = [(a+ib)(a-ib) - (-c+id)(c+id)]` `=>A = [a^2-i^2b^2-(i^2d^2 - c^2)]` As `i^2 =-1`, `:. A = a^2+b^2+c^2+d^2` |
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