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If tan^(3)x+3gt3 tan x +tan^(2)xthen...

If `tan^(3)x+3gt3 tan x +tan^(2)x`then

A

`x in (npi+(pi)/3, n pi +(pi)/2)uu(npi -(pi)/3, npi+(pi)/4), nin Z`

B

`x in (n pi+(pi)/4, npi+(pi)/2)uu(npi-(pi)/4, n pi+(pi)/4),n in Z`

C

`x in (n pi -(pi)/6, n pi+(pi)/2)uu(n pi -(pi)/4, npi +(pi)/4), n in Z`

D

`x in (n pi -(pi)/3, n pi+(pi)/2)uu(n pi -(pi)/4, npi +(pi)/4), n in Z`

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A
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