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Let z1 and z2 be two complex numbers such that |z1|=|z2|=1. If C=[¯¯¯z1−z2¯¯¯z2z1]−1[z1z2−¯¯¯z2¯¯¯z1]−1, then the sum of principal diagonal entries of C is |
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Answer» Let z1 and z2 be two complex numbers such that |z1|=|z2|=1. If C=[¯¯¯z1−z2¯¯¯z2z1]−1[z1z2−¯¯¯z2¯¯¯z1]−1, then the sum of principal diagonal entries of C is |
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