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Q.

Let a function f defined by f(x)= x-xx for x0 and f (0) = 2. then f is

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a

 continuous for all x, except at x = 0

b

continuous no where

c

continuous every where

d

continuous for all x, except at x = 1

answer is D.

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Detailed Solution

f(x)=x-|x|xf(x)=1-|x|x, f(0)=2 At x=0 RHL=limx0+1-|x|x=limx0+1-xx=0 LHL=limx0-1-|x|x=limx0-1-(-x)x=2 limx0+f(x)limx0-f(x)  f is discontinuous at x=0 Option (D) is correct

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