\frac{d}{dx}f\left(g\left(x\right)\right)=
- f'\left(g'\left(x\right)\right)
- f'\left(g\left(x\right)\right)\cdot g'\left(x\right)
- f\left(g'\left(x\right)\right)\cdot g'\left(x\right)
- f\left(x\right)\cdot g'\left(x\right)+g\left(x\right)\cdot f'\left(x\right)