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If y = y(x) is the solution of the differential equation, x dx dy + 2y = x 2 satisfying y

1. = 1, then ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ 2 1 y is equal to :
2. 64 7
3. 16 49
4. 4 1 (4) 16 13

Correct answer: 64 7

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