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$$ \left(c \cdot f(x)\right)' = c \cdot f'(x) $$ 

$$ \left(f \pm g \right)' = f' \pm g' $$ 
Product rule

$$ (f \cdot g)' = f' \cdot g + f \cdot g' $$ 
Quotient rule

$$ \left( \frac{f}{g} \right)' = \frac{ f'\cdot g  f \cdot g' }{g^2} $$ 
Chain rule

$$ \left( f \left(g(x) \right) \right)' = f'(g(x)) \cdot g'(x) $$ 

$$ \frac{d}{dx} (C) = 0 $$ 

$$ \frac{d}{dx} (x) = 0 $$ 

$$ \frac{d}{dx} (x^n) = n \cdot x^{n1} $$ 

$$ \frac{d}{dx} (\sin x) = \cos x $$ 

$$ \frac{d}{dx} (\cos x) = \sin x $$ 

$$ \frac{d}{dx} (\tan x) = \frac{1}{\cos^2x} $$ 

$$ \frac{d}{dx} ( \sec x) = \sec x \cdot \tan x $$ 

$$ \frac{d}{dx} (\csc x) =  \csc x \cdot \cot x $$ 

$$ \frac{d}{dx} (\cot x) = \frac{1}{ \sin^2x } $$ 

$$ \frac{d}{dx} (\arcsin x) = \frac{1}{ \sqrt{1x^2} } $$ 

$$ \frac{d}{dx} (\arccos x) = \frac{1}{\sqrt{1x^2}} $$ 

$$ \frac{d}{dx} (\arctan x) = \frac{1}{1+x^2} $$ 

$$ \frac{d}{dx} (a^x) = a^x \cdot \ln a $$ 

$$ \frac{d}{dx} (e^x) = e^x $$ 

$$ \frac{d}{dx} (\ln x) = \frac{1}{x} , x > 0 $$ 

$$ \frac{d}{dx} (\ln x) = \frac{1}{x} , x \ne 0 $$ 

$$ \frac{d}{dx} \left( \log_a x \right) = \frac{1}{x\cdot \ln a} , x > 0 $$ 
Please tell me how can I make this better.