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Автор - PavlenKo1881

Решить задачу Коши: yy'=1+x^2 , y(1)=1

Ответ

Автор - ruslank1460

yy'=1+x² , y(1)=1

ydy = (1 + x²)dx

∫ydy = ∫(1 + x²)dx

0,5y² = x + x³/3 + C

0,5 = 1 + 1/3 + C

C = -5/6

0,5y² = x + x³/3 - 5/6

y² = 2x + 2x³/3 - 5/3

y = √(2x + 2x³/3 - 5/3)

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