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((1/2)*x-((1/4)*sin(2*x)))'The calculation above is a derivative of the function f (x)
(-((1/4)*sin(2*x)))'+((1/2)*x)'
(1/4)'*sin(2*x)+(1/4)*(sin(2*x))'+((1/2)*x)'
0*sin(2*x)+(1/4)*(sin(2*x))'+((1/2)*x)'
0*sin(2*x)+(1/4)*cos(2*x)*(2*x)'+((1/2)*x)'
0*sin(2*x)+(1/4)*cos(2*x)*((2)'*x+2*(x)')+((1/2)*x)'
0*sin(2*x)+(1/4)*cos(2*x)*(0*x+2*(x)')+((1/2)*x)'
0*sin(2*x)+(1/4)*cos(2*x)*(0*x+2*1)+((1/2)*x)'
0*sin(2*x)+(1/4)*2*cos(2*x)+((1/2)*x)'
(1/2)*(x)'-1/2*cos(2*x)+(1/2)'*x
(1/2)*(x)'-1/2*cos(2*x)+0*x
0*x-1/2*cos(2*x)+(1/2)*1
1/2-((1/2)*cos(2*x))
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