Is the sentence true or false ?

The tangent function y = 2(x/4) is decreasing over (-π, π).

 Is the sentence true or false ?

The tangent function y= tan tan(x) is increasing over (-π/2 , π/2). 

  Is the sentence true or false ?

The tangent function y= tan tan(4x) increasing over (-π/8, π/8).

 Identify increasing interval of tangent function y= tan tan 2x over one period.

Is the sentence true or false ?

The tangent function $y=2\tan\tan\left(\frac{x}{4}\right)$ is decreasing over (-π/6 , π/6)

   Identify increasing interval of tangent function y= tan tan(3x) over one period.

 Is the sentence true or false ?

The tangent function y= tan tan(3x) is decreasing over (-π/6, π/6).

Identify increasing interval of tangent function $y=\tan\left(\frac{x}{4}\right)$ over one period.

Identify increasing interval of tangent function $y=\tan\left(\frac{x}{2}\right)$ over one period.

 Identify increasing interval of tangent function y= tan tan (x/3) over one period.