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Date/Time: 2010-06-14 12:17 (UTC)Posted by: [identity profile] tamgdenasnet.livejournal.com
Разделяем переменные: y*(dy/dx)=x => ydy=xdx; Интегрируем: y^2/2=x^2/2+C, что равносильно y^2=x^2+C; Находим C подставляя (-2,4) в решение; C=12.
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