How do I find the derivative of $y=sin(2x) - 2sin(x)$ ?

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Answer 1 · 2018-04-04T03:17:00

$(dy)/(dx)=2cos(2x)-2cos(x)$

$y=sin(2x)-2sin(x)$
$(dy)/(dx)=2cos(2x)-2cos(x)$

You just have to know your trigonometric derivatives

How do I find the derivative of y=sin(2x) - 2sin(x)y=sin(2x) - 2sin(x)?