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State for which of the following, the tw...

State for which of the following, the two functions `f(x) =x and phi(x) =+sqrt(x^2)` are identical.

A

`0 lt x ltoo`

B

`-oolt x lt oo`

C

`0 le x lt oo`

D

`-oolt x le 0`

Text Solution

Verified by Experts

The correct Answer is:
C
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CHHAYA PUBLICATION-RELATION AND MAPPING -Multiple choice question
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