Ready solution of the problem. The sorcerer of Arutyunov. Exercise number 193.

191 - 210. To investigate using the methods of differential calculus the function u, using the results of the study, to construct its graph.

193. y = (x2 + 1) / (x2 - 1)

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Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)