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Let f(x) and phi(x) be defined by f(x)...

Let `f(x) and phi(x)` be defined by `f(x)=[x] and phi(x)={0, x in I and x^2, x in R-I [.] =` G.I.F

A

g is continuous at x=1

B

f is continuous at x=2

C

g o f is a continuous function

D

f o g is a continuous function

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The correct Answer is:
C
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