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If the range of the function F(x)=tan^-...

If the range of the function `F(x)=tan^-1(3x^2+bx+c)` is `[0,pi/2)` ; (domain in R) then :

A

`b ^(2) =3c`

B

`b ^(2) =4c`

C

`b ^(2) =12c`

D

`b ^(2) =8c`

Text Solution

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The correct Answer is:
C
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