1.

Let f(x)=log_(2)log_(3)log_(4)log_(5)(sin x+a(2)). Find the set of values of n for which the domain of f(x) is R.

Answer»

`(-OO, - sqrt(626))UU(sqrt(626), oo)`
`(-oo, 25) uu (25, oo)`
`(-oo, -9) uu (9, oo)`
`(-oo, -16) uu (16, oo)`

ANSWER :A


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