$$\frac{\partial}{\partial x} \left( 3 \sin{\left(2 t \right)}, \ x\right)$$
2
d
---((3*sin(2*t), x))
2
dx
$$\frac{\partial^{2}}{\partial x^{2}} \left( 3 \sin{\left(2 t \right)}, \ x\right)$$
3
d
---((3*sin(2*t), x))
3
dx
$$\frac{\partial^{3}}{\partial x^{3}} \left( 3 \sin{\left(2 t \right)}, \ x\right)$$