Solve d/dx(tan2x/x)

$$\frac { d } { d x } ( \frac { \tan 2 x } { x } )$$

Evaluate

$$\frac{2\left(\sin(x)\left(\cos(x)\right)^{3}-\cos(x)\left(\sin(x)\right)^{3}-x\right)}{x^{2}\left(\left(\sin(2x)\right)^{2}-1\right)}$$

Differentiate w.r.t. x

$$\frac{2\left(-8x\left(\sin(x)\right)^{2}\left(\cos(x)\right)^{6}-8x\left(\cos(x)\right)^{2}\left(\sin(x)\right)^{6}+8\left(\cos(x)\right)^{3}\left(\sin(x)\right)^{5}-8\left(\sin(x)\right)^{3}\left(\cos(x)\right)^{5}+8x^{2}\sin(x)\left(\cos(x)\right)^{3}-8x^{2}\cos(x)\left(\sin(x)\right)^{3}-x\left(\sin(2x)\right)^{4}+2\sin(x)\left(\cos(x)\right)^{3}-2\cos(x)\left(\sin(x)\right)^{3}-2x\cos(4x)\right)}{x^{3}\left(\left(\sin(2x)\right)^{2}-1\right)^{2}}$$