question archive 3) This question is about Poincare disc model
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3) This question is about Poincare disc model . (a) Suppose is a circle centered at such that is a P- line. Then
the equation of is . (b) Using (a), or otherwise, ?nd the P-length , where and. (0) Suppose is the P-line passing
through and . Let and be the inversion of with respect to . Find .