1.

Given x`gt` 0, then value of `f(x)=-3cossqrt(3+x+x^(2))` lie in the interval ….. .

Answer» Given function `f(x)=-3cossqrt(3+x+x^(2))`
We know that, `" "-1lecosxle1`
`rArr" "-3le3cosxle3`
`rArr" "3ge-3cosxge-3`
`rArr" "-3le-3cosxle3`
So, the value of `f(x)` lies in [-3, 3].


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