If the normal to the curve \( y=f(x) \) at \( x=0 \) be given
by the equation \( 3 x-y+3=0 \), t.... VIDEO
If the normal to the curve \( y=f(x) \) at \( x=0 \) be given
\( \mathrm{P} \)
by the equation \( 3 x-y+3=0 \), then the value of
W
\( \lim _{x \rightarrow 0} x^{2}\left\{f\left(x^{2}\right)-5 f\left(4 x^{2}\right)+4 f\left(7 x^{2}\right)\right\}^{-1} \), is
(1) \( \frac{1}{3} \)
(2) \( -\frac{1}{3} \)
(3) \( -\frac{1}{5} \)
(4) \( \frac{1}{4} \)
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