d / 2 \
--\((3*x + 1) , x)/
dx
$$\frac{d}{d x} \left( \left(3 x + 1\right)^{2}, \ x\right)$$
2
d / 2 \
---\((3*x + 1) , x)/
2
dx
$$\frac{d^{2}}{d x^{2}} \left( \left(3 x + 1\right)^{2}, \ x\right)$$
3
d / 2 \
---\((3*x + 1) , x)/
3
dx
$$\frac{d^{3}}{d x^{3}} \left( \left(3 x + 1\right)^{2}, \ x\right)$$