!$ \dfrac{d\left(u+v\right)}{dx}=\dfrac{du}{dx}+\dfrac{dv}{dx} !$

!$ \dfrac{d\left(u-v\right)}{dx}=-\dfrac{dv}{dx}+\dfrac{du}{dx} !$

!$ \dfrac{d\left(u.v\right)}{dx}=u.\ \dfrac{dv}{dx}+v.\ \dfrac{du}{dx} !$

!$ \dfrac{d\left(\dfrac{u}{v}\right)}{dx}=\dfrac{u\ .\ \dfrac{dv}{dx}-v\ .\ \dfrac{du}{dx}}{v^2} !$

!$ \dfrac{d\left(u^n\right)}{dx}=n\ .\ \left(u^{n-1}\right)\ \dfrac{d}{d} !$