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If phi(x)=x^2-6x+8 where x in R then the...

If `phi(x)=x^2-6x+8` where `x in R` then the range of the function `phi` is given by

A

`phi(x)ge-1`

B

`phi(x) ge1`

C

`-1lephile1`

D

none of these.

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The correct Answer is:
A
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