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For what vales of a, the curve x^(4) + 3...

For what vales of a, the curve `x^(4) + 3ax^(3) + 6x^(2) + 5` is not situated below any of its tangent lines ?

A

`|a| gt (4)/(3)`

B

`|a| lt (4)/(3)`

C

`|a| gt 1`

D

`|a| lt (1)/(3)`

Text Solution

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The correct Answer is:
B
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