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    				| 1. | सिद्ध कीजिये कि फलन ` f ( x ) ={{:((sin^(-1)x)/( x ) + e ^x",", x ne 0), ( 2,"," x = 0):} ` , बिंदु ` x = 0 ` पर सतत है | | 
| Answer» ` f(0-0) = lim _ ( hto 0) f ( 0 - h) =lim _ (hto 0 ) f ( -h) = lim _ ( hto 0)[ (sin ^(-1)(-h))/( -h) + e^(-h)] ` ` = lim _ ( hto 0) [ ( -sin^(h))/( -h) + e ^(-h)] = lim _ (hto 0)((sin^(-1)h)/(h) + e^(-h)) ` ` = lim _ ( hto 0) (sin^(-1)h)/(h) + lim _ ( h to 0) e ^(-h) = lim _ ( hto 0) (1)/(sqrt (1 -h^2))+ lim _ ( hto 0) e^(-h) ` ` = - ( 1) /(sqrt ( 1 - 0) ) + e^(-0) = 1 + 1 = 2 ` | |