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The greatest and the least value of the ...

The greatest and the least value of the function, `f(x)=sqrt(1-2x+x^(2))-sqrt(1+2x+x^(2)),x in(-oo,oo)` are

A

2,-2

B

2,-1

C

2,0

D

none

Text Solution

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The correct Answer is:
A
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