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Let y = y(x) be the solution of the differential equation y ) 1 x ( x 5 dx dy 5   = 7 2 5 x ) 1 x (  , x > 0. If y

1. = 2, then y
2. is equal to
3. 128 637
4. 128 679 (3) 128 693 (4) 128 697

Correct answer: 128 637

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