If \( y^{2}=a x^{2}+b x+c \), then \( y^{3} \frac{d^{2} y}{d x^{2}} \) is P (1) a constant (2) a...

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If \( y^{2}=a x^{2}+b x+c \), then \( y^{3} \frac{d^{2} y}{d x^{2}} \) is
P
(1) a constant
(2) a function of \( x \) only
W
(3) a function of \( y \) only
(4) a function of \( x \) and \( y \)
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