1.

`lim_(xrarrpi//2)(a^(cotx)-a^cosx)/(cotx-cosx)a gt 0` is equal toA. `log_(2)((pi)/(2))`B. `log_e 2`C. `log_e a`D. `a`

Answer» Correct Answer - C
We have,
`lim_(xto pi//2)(a^(cotx)-a^cosx)/(cotx-cosx)`
` lim_(xto pi//2) a^cosx ((a^cotx-cos x-1)/(cot x -cos x)) =a ^(cos pi//2)xxlog _(e) a= log_e a `


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