\[\frac{d}{dx} \csc{x}\cot{x}\]

1
Use Product Rule to find the derivative of cscxcotx\csc{x}\cot{x}. The product rule states that (fg)=fg+fg(fg)'=f'g+fg'.
(ddxcscx)cotx+cscx(ddxcotx)(\frac{d}{dx} \csc{x})\cot{x}+\csc{x}(\frac{d}{dx} \cot{x})

2
Use Trigonometric Differentiation: the derivative of cscx\csc{x} is cscxcotx-\csc{x}\cot{x}.
cscxcot2x+cscx(ddxcotx)-\csc{x}\cot^{2}x+\csc{x}(\frac{d}{dx} \cot{x})

3
Use Trigonometric Differentiation: the derivative of cotx\cot{x} is csc2x-\csc^{2}x.
cscxcot2xcsc3x-\csc{x}\cot^{2}x-\csc^{3}x

Done

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