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The function $f(x)=\frac{x+1}{9 x+x^{3}}$ is
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discontinuous at exactly one point.
(C)
$f(x)=\frac{x+1}{9 x+x^{3}}=\frac{x+1}{x\left(9+x^{2}\right)}$
The function is discontinuous at exactly one point i.e. $x=0$.
$f(x)=\frac{x+1}{9 x+x^{3}}=\frac{x+1}{x\left(9+x^{2}\right)}$
The function is discontinuous at exactly one point i.e. $x=0$.
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