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(2*sin(x)-4)'The calculation above is a derivative of the function f (x)

(2*sin(x))'+(-4)'

(2)'*sin(x)+2*(sin(x))'+(-4)'

0*sin(x)+2*(sin(x))'+(-4)'

0*sin(x)+2*cos(x)+(-4)'

2*cos(x)+0

2*cos(x)

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