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Let x = x(y) be the solution of differential equation y 2 dx + ⎟ ⎟ ⎠ ⎞ ⎜ ⎜ ⎝ ⎛ y 1 – x dy = 0. If x

1. = 1, then x ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ 2 1 is :
2. 2 1 + e
3. e 2 3 +
4. 3 – e (4) 3 + e

Correct answer: e 2 3 +

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