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Find the range of the function f(x)=(x^4...

Find the range of the function `f(x)=(x^4+x^2+5)/((x^2+1)^2)`

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Verified by Experts

The correct Answer is:
R - {5}
`f(x)=(x^(2)-x-6)/(x-3)=((x-3)(x+2))/(x-3)=x+2,x ne 3`
Hence range is `R-{5}`
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