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Let L = lim(x rarr 0) ( a - sqrt( a^2 - ...

Let L = `lim_(x rarr 0) ( a - sqrt( a^2 - x^2) - x^2/4)/x^4`, a>0.If L is finite, then

A

a = 2

B

a= 1, b= 6

C

`L = ( 1)/( 64)`

D

`L = (1) / ( 32)`

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The correct Answer is:
A,C
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