1.

The value of `lim_(xrarr1) (logx)/(sin pi x)`, isA. `(1)/(pi)`B. `-pi`C. `pi`D. `-(1)/(pi)`

Answer» Correct Answer - D
We have,
`lim_(xto1) (logx)/(sin pi x)=lim_(xto1) (log {1+(x-1)})/(sin (pi-pix))`
` =lim_(xto1) (log {1+(x-1)})/(sin pi(1-x))`
` =lim_(xto1) (log {1+x(x-1)})/(x-1)xx(x-1)/(sinpi(1-x))`
` =-(1)/(2)lim_(xto1) (log {1+x(x-1)})/(x-1)xx (pi(x-x))/(sin pi(1-x))= -(1)/(pi)`


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