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X1 1 x. Решение y=-2 +1. Y'-2xy=1-2x^2. (1+X^2)Y": +2xy"=0. X^2y''+XY'=1.
Решение y=-2 +1. Y'-2xy=1-2x^2. (1+X^2)Y": +2xy"=0. X^2y''+XY'=1.

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