1.

If `f(x)={{:(x+(1)/(2)",",xlt0),(2x+(3)/(4)",",xge0):},"then"[lim_(xrarr0) f(x)]="(where[.] denotes the greatest integer function)"`A. `(1)/(2)`B. `(3)/(4)`C. does not existD. none of these

Answer» Correct Answer - C
`underset(xrarr0^(-))(lim)f(x)=underset(xrarr0^(-))(lim)(x+(1)/(2))=(1)/(2)`
`underset(xrarr0^(+))(lim)f(x)=underset(xrarr0^(+))(lim)(2x+(3)/(4))=(3)/(4)`
`therefore" "underset(xrarr0)(lim)f(x)` does not exist.


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