Ready solution of the problem. The sorcerer of Arutyunov. Task number 453.

451 - 460. Find the first three nonzero expansion terms in the power series of the solution y = y (x) of the differential equation y '= f (x, y) satisfying the initial condition y (0) = y0.

453. y '= y + y2; Y (0) = 3.

If you like the job, proreshayu to order, please contact me http://fizmathim.plati.ru
Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)