# Math Help - Differentiation

1. ## Differentiation

Can someone remind me how to differentiate step by step, thanks

xcubed , 1/x , -1/x and (4/xcubed)

2. You use the power rule $\frac{d}{dx}\left(x^n\right) = nx^{n-1}$.

3. Originally Posted by Natasha1
Can someone remind me how to differentiate step by step, thanks

xcubed , 1/x , -1/x and (4/xcubed)
are you familiar with these rules ?

power rule ...

$\frac{d}{dx} [x^n] = nx^{n-1}$

konstant multiple rule ...

$\frac{d}{dx} [k \cdot f(x)] = k \cdot f'(x)$

... or are you supposed to use the definition of a derivative?

4. Ok I have managed to do it. Thanks.