Question

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

# cost lim- -11-7x is equal to :

Solution