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Let f(x) = {(x", if x is irrational"),(0...

Let `f(x) = {(x", if x is irrational"),(0", if x is ratinal"):}` then f is

A

f(x) continuous for all real x

B

f(x) is discontinuous for all x

C

f(x) is continuous only at x =1/2

D

f(x) is discontinuous only at x =1/2

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The correct Answer is:
C
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