1.

`lim_(xrarr0)(sinx)/(sqrt(x+1)-sqrt(1-x))` is equal toA. 2B. 0C. 1D. `-1`

Answer» Correct Answer - c
Given, `lim_(xto0)(sinx)/(sqrt(x+1)-sqrt(1-x))`
`=lim_(xto0)(sinx)/(sqrt(x+1)-sqrt(1-x)).(sqrt(x+1)+sqrt(1-x))/(sqrt(x+1)+sqrt(1-x))`
`=lim_(xto0)sin(sqrt(x+1)+sqrt(1-x))/(x+1-1+x)`
`=1/2lim_(xto0)(sinx)/(x) lim_(xto0)(sqrt(x+1)+sqrt(1-x))`
`=1/2.1.2=` `[therefore lim_(xto0)(sinx)/(x)=1]`


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