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If f(x) = {{:((sqrt(4+ax)-sqrt(4-ax))/x,...

If `f(x) = {{:((sqrt(4+ax)-sqrt(4-ax))/x,-1 le x lt 0),((3x+2)/(x-8), 0 le x le 1):}` continuous in `[-1,1]`, then the value of a is

A

1

B

`-1`

C

`1/2`

D

`-1/2`

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The correct Answer is:
D
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