BITSAT2009MathematicsApplication of DerivativesActual
The set of points of discontinuity of the function (1 / | x | ) is -
Options
- A( -1,0,1 )
- B( 0 )
- C( 0,1 )
- DNone of these
Correct answer
A. ( -1,0,1 )
Step-by-step solution
Let (f(x)= 1 |x| ) The points of disconinuity of (f(x) ) are those points where (f(x) ) is undefined or infinite. It is undefined when (x=0 ) and is infinite when ( |x|=0,|x|=1 ), i.e. (x= 1 ). ( ) Set of points of discontinuity (= -1,0,1 ).