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lim(x->oo)cot^(-1)(x^(-a)loga x)/(sec...

`lim_(x->oo)cot^(-1)(x^(-a)log_a x)/(sec^(-1)(a^xlog_x a)),(a >1)`is equal to (a)`2` (b)` 1` (c) `(log)_a2` (d) 0

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