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Let f(x)=(log)2(log)3(log)4(log)5(sin x+...

Let `f(x)=(log)_2(log)_3(log)_4(log)_5(sin x+a^2)dot` Find the set of values of `a` for which the domain of `f(x)i sRdot`

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The correct Answer is:
`aepsilon(-oo,-sqrt(626)uu(sqrt(626),oo)`
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