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The value of the parameter a so that the...

The value of the parameter `a` so that the line `(3-a)x+ay+ a^2-1=0` is normal to the curve `xy=1` may lie in the interval

A

`(-oo, 0)cup (3,oo)`

B

(1,3)

C

(-3,3)

D

None of these

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The correct Answer is:
A
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