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If f (x) = cot ^(-1)((3x -x ^(3))/( 1- 3...

If `f (x) = cot ^(-1)((3x -x ^(3))/( 1- 3x ^(2)))and g (x) = cos ^(-1) ((1-x ^(2))/(1+x^(2)))` then `lim _(xtoa)(f(x) - f(a))/( g(x) -g (a)), 0 lt 1/2` is :

A

`(3)/(2(1 + a^2) ) `

B

`(3)/(2(1 + x^2) )`

C

`3/2 `

D

`-3/2`

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IPUCET PREVIOUS YEAR PAPERS-GGSIPU MATHEMATICS 2004-MCQ
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