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The interval in which the function \(f(x)=\frac{4 x^2+1}{x}\) is decreasing is :

Q1

The interval in which the function \(f(x)=\frac{4 x^2+1}{x}\) is decreasing is :

a

\(\left(-\frac{1}{2}, \frac{1}{2}\right)\)

b

\(\left[-\frac{1}{2}, \frac{1}{2}\right]\)

c

\((-1,1)\)

d

\([-1,1]\)

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