1.

If tan^(3) x + 3 gt 3 tan x + tan^(2) xthen

Answer»

`X in (n pi + (pi)/(3), n pi + (pi)/(2)) cup (n pi - (pi)/(3), n pi + (pi)/(4)), n in Z`
`x in (n pi + (pi)/(4), n pi + (pi)/(2)) cup (n pi - (pi)/( 4), n pi + (pi)/(4)), n in Z`
`x in (n pi - (pi)/(6), n pi + (pi)/(2)) cup (n pi - (pi)/(4), n pi + (pi)/(4)), n in Z`
`x in (n pi - (pi)/(3), n pi + (pi)/(2)) cup (n pi - (pi)/(4), n pi + (pi)/(4)), n in Z`

ANSWER :A


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