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Let f (x) =x and g (x) = |x| for all . ...

Let f (x) =x and g (x) = |x| for all . Then the function satisfying `[phi (x)-f(x)]^(2)+[phi (x)-g(x)]^(2)=0` is

A

`phi(x)=x, x in[0,oo]`

B

`phi(x)=x, x inR`

C

`phi(x)=-x, x in(-oo,0)`

D

`phi(x)=-x+|x|, x in R`

Text Solution

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The correct Answer is:
A
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