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tg^3x+3>tgx+tg^2x inequation

A inequation with variable

The solution

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   3                      2   
tan (x) + 3 > tan(x) + tan (x)
$$\tan^{3}{\left(x \right)} + 3 > \tan^{2}{\left(x \right)} + \tan{\left(x \right)}$$
tan(x)^3 + 3 > tan(x)^2 + tan(x)
Solving inequality on a graph