$$\frac{d}{d x} \left( \operatorname{atan}{\left(x \right)}, \ x\right)$$
2
d
---((atan(x), x))
2
dx
$$\frac{d^{2}}{d x^{2}} \left( \operatorname{atan}{\left(x \right)}, \ x\right)$$
3
d
---((atan(x), x))
3
dx
$$\frac{d^{3}}{d x^{3}} \left( \operatorname{atan}{\left(x \right)}, \ x\right)$$