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If f(x)> x ;AA x in R. Then the equation...

If `f(x)> x ;AA x in R.` Then the equation `f(f(x))-x=0,` has

A

atleast one real root.

B

more than one real root.

C

no real root if f(x) is a polynomial and one real root if f(x) is not a polynomial.

D

no real root.

Text Solution

Verified by Experts

The correct Answer is:
D
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