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Consider the implicit equation \( x^{2}+5 x y+y^{2}-2 x+y-6=0 \)
\( \mathrm{P} \)
The value of \( \frac{d^{2} y}{d x^{2}} \) at \( (1,1) \) is
W)
(a) \( \frac{111}{256} \)
(b) \( -\frac{111}{256} \)
(c) \( \frac{256}{111} \)
(d) \( -\frac{256}{111} \)
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