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If f (x) ={{:(x",", "when " 0 lt x lt 1)...

If `f (x) ={{:(x",", "when " 0 lt x lt 1),(2-x",", "when" 1 lt x le 2):}`then `f'(1)` is equal to-

A

0

B

1

C

`-1`

D

none of these

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The correct Answer is:
D
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