Question

( lim _{x rightarrow 1} frac{cos left(frac{pi x}{2}right)}{1-sqrt{x}} )
( frac{0}{0} ) form
( begin{aligned} text { Litospital rule } lim _{x rightarrow 1} frac{operatorname{tsin}left(frac{pi x}{2}right)left(frac{1}{x}right)}{operatorname{tin} sqrt{x}} & text { in } sqrt{x} sin left(frac{pi x}{2}right) end{aligned} )

# cos lim- *11-X is equal to : + .

Solution