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If the solution of the differential equation x 2 2 2 2 x e ) 2 – x )( x 2 – x ( y ) 2 – x ( e dx dy = + satisfies y(0) = 0, then the value of y

1. is __________.
2. –1
3. 1
4. 0 (4) e

Correct answer: 1

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