JEE Main2013MathematicsContinuity and DifferentiabilityActual
Consider the function : f(x)=[x]+|1-x|,-1 x 3 where [x] is the greatest integer function. Statement 1: f is not continuous at x=0,1,2 and 3 Statement 2:f(x)= = array cc -x, & -1 x < 0 1-x, & 0 x < 1 1+x, & 1 x < 2 2+x, & 2 x 3 array
Options
- AStatement 1 is true; Statement 2 is false,
- BStatement 1 is true; Statement 2 is true; Statement 2 is not correct explanation for Statement 1.
- CStatement 1 is true; Statement 2 is true; Statement It is a correct explanation for Statement 1.
- DStatement 1 is false; Statement 2 is true.
Correct answer
A. Statement 1 is true; Statement 2 is false,
Step-by-step solution
Let f(x)=[x]+|1-x|,-1 x 3 where [x]= greatest integer function. f is not continuous at x=0,1,2,3 But in statement-2 f(x) is continuous at x=3 . Hence, statement-1 is true and 2 is false.